HELP! - MDC and Firefox

[Terrilein]

I can't access MDC forums with my usual browser (Firefox) since yesterday morning. I get the error message below in every forum I've bookmarked. Can anybody make any sense out of this?

Bad Request

Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.

Cookie: bbsessionhash=990c7df03e5d44c47b7122c1780b8f98; bbthread_lastview=22f2b6967b65189989085bc8416f196652cb117ba-175-%7Bi-1171446_i-1278648937_i-1224001_i-1273944230_i-1224181_i-1273851179_i-1222746_i-1273749745_i-1224387_i-1273965828_i-1224489_i-1273946560_i-1224103_i-1273918478_i-1224689_i-1274405544_i-1223755_i-1274472889_i-1224101_i-1273867110_i-1224322_i-1273997081_i-1224646_i-1273948873_i-1224306_i-1274104916_i-1222382_i-1274962982_i-1223063_i-1273860904_i-1219821_i-1273771546_i-1220817_i-1273777438_i-1224476_i-1273924723_i-1224728_i-1273955857_i-1224711_i-1273989160_i-1220081_i-1273989924_i-1224955_i-1274081979_i-347728_i-1278734010_i-1224865_i-1274034285_i-1225045_i-1274197178_i-1225072_i-1274063032_i-1224820_i-1274157728_i-1223712_i-1274050146_i-1213116_i-1274079070_i-1225229_i-1274499302_i-1225463_i-1274181951_i-1225541_i-1274277551_i-1225619_i-1274203064_i-1225554_i-1274205429_i-1225602_i-1274208319_i-1225645_i-1274238479_i-1225374_i-1274290719_i-1225756_i-1274347944_i-1225879_i-1274273169_i-1225898_i-1274277957_i-1225327_i-1274281114_i-1225919_i-1274414680_i-1225963_i-1275793982_i-1225977_i-1274297277_i-1222774_i-1274283830_i-1225718_i-1274297794_i-1225939_i-1274383222_i-1226123_i-1274475845_i-1226143_i-1274371848_i-1226204_i-1274528438_i-1226349_i-1274488550_i-1226361_i-1274431049_i-1226542_i-1274489456_i-1226174_i-1274453715_i-1224430_i-1274488242_i-1226621_i-1274663574_i-1226627_i-1274507364_i-1208615_i-1274667713_i-1226770_i-1274515827_i-1226690_i-1274520770_i-1226901_i-1275415779_i-1227023_i-1274664735_i-1226974_i-1274622107_i-1227196_i-1274919882_i-1227457_i-1274982050_i-1227541_i-1275085427_i-1227520_i-1274764103_i-1227188_i-1274766467_i-1227507_i-1274788296_i-1227687_i-1274975519_i-1227705_i-1274806242_i-1227957_i-1274922721_i-1227872_i-1274852231_i-1227640_i-1274848357_i-1227271_i-1274830222_i-1227980_i-1274866262_i-1226808_i-1274927924_i-1228109_i-1274905047_i-1228283_i-1274956850_i-1223084_i-1275048807_i-1228432_i-1275249444_i-1228397_i-1274965205_i-1228440_i-1275267624_i-1228492_i-1274984068_i-1228547_i-1275093560_i-1228665_i-1275359730_i-1228712_i-1275039359_i-1228812_i-1275538618_i-1228892_i-1275085098_i-1228913_i-1275076277_i-1228792_i-1275125453_i-1228825_i-1275074709_i-1228888_i-1275083014_i-1229093_i-1275125374_i-1229071_i-1275356471_i-1229104_i-1275134213_i-1229180_i-1275348438_i-1228309_i-1275215103_i-1229373_i-1275835785_i-1229364_i-1275416234_i-1229400_i-1275247247_i-1229337_i-1275246749_i-1229306_i-1275244855_i-1229282_i-1275246704_i-1229275_i-1275244463_i-1227547_i-1275243920_i-1229579_i-1275373092_i-1229555_i-1275317114_i-1229697_i-1275445223_i-1229993_i-1275528094_i-1230096_i-1275887007_i-1229921_i-1275425049_i-1230221_i-1275461421_i-1230282_i-1275505150_i-1230511_i-1275616131_i-1230553_i-1275548573_i-1230364_i-1275553893_i-1230464_i-1275854066_i-1230825_i-1276072849_i-1230889_i-1277431578_i-1230813_i-1275662283_i-1230839_i-1275654007_i-1230894_i-1275619935_i-1230612_i-1275593933_i-1230326_i-1276193457_i-1227829_i-1275638728_i-1231011_i-1276135768_i-1230609_i-1275714874_i-1231310_i-1275758463_i-1231339_i-1275801234_i-1231608_i-1275843004_i-1231562_i-1275877529_i-1231697_i-1277674508_i-1231587_i-1276345162_i-1231800_i-1275889587_i-1232163_i-1276231264_i-1231995_i-1276018896_i-1232019_i-1276055897_i-1232396_i-1276294030_i-1232432_i-1276254873_i-1232558_i-1276293523_i-1232565_i-1276196644_i-1232318_i-1276094306_i-1232679_i-1276110508_i-1232460_i-1276116703_i-1232793_i-1276281333_i-1232845_i-1276137532_i-1232842_i-1276154964_i-1232876_i-1276223591_i-1232969_i-1276175531_i-1232931_i-1276173531_i-1232968_i-1276302237_i-1233064_i-1276406350_i-1233117_i-1276307441_i-1233044_i-1276204786_i-1233197_i-1276303419_i-1233285_i-1276319341_i-1233321_i-1276280621_i-1233301_i-1276269991_i-1233375_i-1276279910_i-1233407_i-1276448053_i-1233555_i-1276525862_i-1233800_i-1276408111_i-1233752_i-1276509928_i-1233701_i-1276400040_i-1233850_i-1276479459_i-1233895_i-1276451669_i-1233796_i-1276451905_i-1232249_i-1276432395_i-1233958_i-1276548692_i-1233852_i-1277053880_i-1234071_i-1276833690_i-1233743_i-1276538640_i-1234426_i-1276622802_i-1233966_i-1276649139_%7D; bblastvisit=1255220349; bblastactivity=0; __utma=20043300.1299673796.1255597527.1278746265.1278827944.1563; __qca=P0-551418037-1255597527058; bbuserid=72167; bbpassword=bec87e44e04fb3a15d57941e0470f2bb; grvinsights=575cb7a8da2ac590c40172edd85db6de; __utmz=20043300.1271999692.1112.1.utmccn=(direct)|utmcsr=(direct)|utmcmd=(none); bbstyleid=40; bbsessionhash=158dfa1d7a852d34694f6cf40fa2b334; bbforum_view=e62f73b1788e3a8ace38a89c739dcff4cad7c12aa-7-%7Bi-538_i-1278672021_i-20_i-1278670369_i-300_i-1276955575_i-534_i-1274774004_i-2_i-1277904324_i-368_i-1278585205_i-231_i-1278585236_%7D; bbthread_lastview=5ff3defde748afb101ab6a68f4baf03eb835e361a-175-%7Bi-1171446_i-1278648937_i-1224001_i-1273944230_i-1224181_i-1273851179_i-1222746_i-1273749745_i-1224387_i-1273965828_i-1224489_i-1273946560_i-1224103_i-1273918478_i-1224689_i-1274405544_i-1223755_i-1274472889_i-1224101_i-1273867110_i-1224322_i-1273997081_i-1224646_i-1273948873_i-1224306_i-1274104916_i-1222382_i-1274962982_i-1223063_i-1273860904_i-1219821_i-1273771546_i-1220817_i-1273777438_i-1224476_i-1273924723_i-1224728_i-1273955857_i-1224711_i-1273989160_i-1220081_i-1273989924_i-1224955_i-1274081979_i-347728_i-1274189488_i-1224865_i-1274034285_i-1225045_i-1274197178_i-1225072_i-1274063032_i-1224820_i-1274157728_i-1223712_i-1274050146_i-1213116_i-1274079070_i-1225229_i-1274499302_i-1225463_i-1274181951_i-1225541_i-1274277551_i-1225619_i-1274203064_i-1225554_i-1274205429_i-1225602_i-1274208319_i-1225645_i-1274238479_i-1225374_i-1274290719_i-1225756_i-1274347944_i-1225879_i-1274273169_i-1225898_i-1274277957_i-1225327_i-1274281114_i-1225919_i-1274414680_i-1225963_i-1275793982_i-1225977_i-1274297277_i-1222774_i-1274283830_i-1225718_i-1274297794_i-1225939_i-1274383222_i-1226123_i-1274475845_i-1226143_i-1274371848_i-1226204_i-1274528438_i-1226349_i-1274488550_i-1226361_i-1274431049_i-1226542_i-1274489456_i-1226174_i-1274453715_i-1224430_i-1274488242_i-1226621_i-1274663574_i-1226627_i-1274507364_i-1208615_i-1274667713_i-1226770_i-1274515827_i-1226690_i-1274520770_i-1226901_i-1275415779_i-1227023_i-1274664735_i-1226974_i-1274622107_i-1227196_i-1274919882_i-1227457_i-1274982050_i-1227541_i-1275085427_i-1227520_i-1274764103_i-1227188_i-1274766467_i-1227507_i-1274788296_i-1227687_i-1274975519_i-1227705_i-1274806242_i-1227957_i-1274922721_i-1227872_i-1274852231_i-1227640_i-1274848357_i-1227271_i-1274830222_i-1227980_i-1274866262_i-1226808_i-1274927924_i-1228109_i-1274905047_i-1228283_i-1274956850_i-1223084_i-1275048807_i-1228432_i-1275249444_i-1228397_i-1274965205_i-1228440_i-1275267624_i-1228492_i-1274984068_i-1228547_i-1275093560_i-1228665_i-1275359730_i-1228712_i-1275039359_i-1228812_i-1275538618_i-1228892_i-1275085098_i-122

[AdinaL]

Hmm, that's a very interesting message.

Try unbookmarking, clearing your cookies, and then rebookmarking. Let me know if that works.

[Arduinna]

I had the same problem over the weekend. I just quit firefox and then reopened it and didn't have any further problems.

[ladymeag]

I've quit, cleared, cleaned out session manager - it keeps giving me that same message.

Bad Request

Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.

Cookie: bbforum_view=000be42b99242667c2e150020cf65bb8ebad0 9faa-9-%7Bi-165_i-1277960921_i-329_i-1278571444_i-92_i-1279334812_i-235_i-1278538179_i-32_i-1277967348_i-180_i-1278022446_i-5_i-1278294317_i-448_i-1278222504_i-347_i-1278268467_%7D; bbsessionhash=6fac4cd64dad315d4674fd67ef16a708; bbthread_lastview=c9889ef59123760bf2446e9224bef107 e4a15887a-175-%7Bi-1238547_i-1277950925_i-1238411_i-1277736272_i-1234460_i-1277870632_i-1238551_i-1278207638_i-1236602_i-1278001245_i-1236600_i-1277184227_i-1175190_i-1265252745_i-1238543_i-1277759151_i-1237249_i-1278754658_i-1238492_i-1277750045_i-1238010_i-1277734976_i-1184374_i-1279081884_i-1236095_i-1277746733_i-1229630_i-1279295139_i-1235674_i-1277531230_i-1238481_i-1277957824_i-1238528_i-1277761753_i-1229702_i-1277765136_i-974482_i-1240069180_i-1228316_i-1278570703_i-1238195_i-1277670547_i-1234262_i-1277765112_i-1122387_i-1249915969_i-361293_i-1191683180_i-1238353_i-1277763024_i-1181751_i-1263066818_i-1238332_i-1277767589_i-1238805_i-1277834701_i-1238779_i-1277832286_i-1238694_i-1277940188_i-1238553_i-1277930041_i-1237548_i-1277835391_i-1237870_i-1277824642_i-1238512_i-1277862071_i-1237549_i-1277835600_i-1238703_i-1277835155_i-1237983_i-1277827135_i-1238546_i-1277825119_i-1232839_i-1278556970_i-1237536_i-1277825264_i-1238789_i-1277832243_i-1238761_i-1277825366_i-1238603_i-1277829747_i-1237572_i-1277836226_i-1213402_i-1277916331_i-1236941_i-1277811529_i-1238561_i-1277856125_i-1238872_i-1277847142_i-1238477_i-1277852816_i-1238890_i-1277851640_i-1200055_i-1278017840_i-1237975_i-1277871382_i-1238974_i-1277916093_i-1238937_i-1277871664_i-1238946_i-1277873393_i-1237667_i-1277869430_i-1237385_i-1278000893_i-1239050_i-1278063124_i-1213873_i-1277915787_i-1226181_i-1278580979_i-1238384_i-1277899153_i-1239077_i-1277949263_i-1239107_i-1277940073_i-1239404_i-1277996941_i-1239332_i-1278803863_i-1239469_i-1278006710_i-1238886_i-1277990602_i-1237862_i-1278006353_i-1235583_i-1278004609_i-1239105_i-1277986282_i-1142724_i-1278016367_i-1237598_i-1278019541_i-1238596_i-1278020804_i-1237006_i-1278019798_i-1239309_i-1278019817_i-1233836_i-1278034673_i-1239828_i-1278102187_i-1239843_i-1278109015_i-1239800_i-1278108780_i-1239706_i-1278198399_i-1239913_i-1278149413_i-1235742_i-1278134047_i-1239725_i-1278194733_i-1240085_i-1278187790_i-1234629_i-1278199490_i-1240141_i-1278199756_i-1240003_i-1278221159_i-1240214_i-1278225572_i-1239450_i-1278268323_i-1239122_i-1278291492_i-1240367_i-1278294297_i-1239990_i-1278308025_i-1240378_i-1278309536_i-1240529_i-1278689097_i-1240365_i-1278364124_i-1240544_i-1278364005_i-1240525_i-1278361683_i-1240531_i-1278360547_i-1240485_i-1278371919_i-1240504_i-1278370599_i-1240078_i-1278373411_i-1240083_i-1278382114_i-1240615_i-1278389738_i-1240493_i-1278389846_i-1240453_i-1278447130_i-1233507_i-1278446115_i-1240672_i-1278442065_i-1240805_i-1278440081_i-1240830_i-1278442156_i-1240765_i-1278453381_i-1240942_i-1278461434_i-1240992_i-1278528294_i-1240560_i-1278527760_i-1240891_i-1278607095_i-1240764_i-1278515481_i-1241107_i-1278517922_i-1240887_i-1278526017_i-1241056_i-1278628571_i-1241232_i-1278565689_i-1241203_i-1278564567_i-1241495_i-1278622368_i-1241390_i-1279249511_i-1241318_i-1278604625_i-1241395_i-1278615129_i-1241365_i-1278591795_i-1241398_i-1278625013_i-1241530_i-1278621648_i-1236449_i-1278621203_i-1241362_i-1278617692_i-1241258_i-1279025636_i-1241332_i-1278610862_i-1241772_i-1278692270_i-1241696_i-1278687329_i-1228496_i-1278690610_i-1241778_i-1278692002_i-1241012_i-1278680066_i-1241664_i-1278659838_i-1241934_i-1278722596_i-1241831_i-1278722200_i-1241809_i-1278719636_i-1241860_i-1278708347_i-1241970_i-1278730537_i-1242026_i-1278737989_i-1242027_i-1278780811_i-1241895_i-1278796814_i-1242104_i-1278873119_i-1241960_i-1278803100_i-1242130_i-1278805140_i-1242162_i-1278868409_i-1242319_i-1278867067_i-1240087_i-1278892329_i-1242458_i-1278902423_i-1242455_i-1278907529_i-1242477_i-1278951646_i-1242562_i-1278969241_i-1242749_i-1278991907_i-1242495_i-1278982756_i-1242590_i-1278980627_i-1242596_i-1278952397_i-1225057_i-1279030799_i-1242914_i-1279049102_i-1243016_i-1279114951_i-1242869_i-1279031673_i-1231392_i-1279038605_i-1242902_i-1279042203_i-1242997_i-1279053760_i-1242789_i-1279027550_i-1242975_i-1279055853_i-1243221_i-1279124356_i-1243101_i-1279109767_i-1239884_i-1279127012_i-1243302_i-1279127279_i-1243189_i-1279127351_i-1243432_i-1279143527_i-1243393_i-1279140933_%7D; bblastvisit=1275107777; bblastactivity=0; __qca=P0-957473971-1275108063144; __utma=20043300.1419006574.1275108063.1279345877.1 279438421.91; __utmz=20043300.1277950552.11.3.utmcsr=mothering.c om|utmccn=(referral)|utmcmd=referral|utmcct=/discussions/index.php; grvinsights=29b99828c707f8730f14d0dca53b6cbb; SESScb7f170b91f536faec6e962b2aded812=tj7ashbc14sfv olqlcclqvv7u0; bbuserid=38459; bbpassword=2a2e4281af859bbeabf6cf6c7cb09c67; vbulletin_userlist_hide_avatars_buddylist=0; has_js=1; h2=o; bbsessionhash=8eb5b600d79107003b099d80a85e3dbd; bbthread_lastview=5e04af46e63060400f374c8568a4dd9c 65f5bbe7a-137-%7Bi-1238547_i-1277950925_i-1238411_i-1277736272_i-1234460_i-1277870632_i-1238551_i-1278207638_i-1236602_i-1278001245_i-1236600_i-1277184227_i-1175190_i-1265252745_i-1238543_i-1277759151_i-1237249_i-1277761810_i-1238492_i-1277750045_i-1238010_i-1277734976_i-1184374_i-1278694696_i-1236095_i-1277746733_i-1229630_i-1278096367_i-1235674_i-1277531230_i-1238481_i-1277957824_i-1238528_i-1277761753_i-1229702_i-1277765136_i-974482_i-1240069180_i-1228316_i-1278570703_i-1238195_i-1277670547_i-1234262_i-1277765112_i-1122387_i-1249915969_i-361293_i-1191683180_i-1238353_i-1277763024_i-1181751_i-1263066818_i-1238332_i-1277767589_i-1238805_i-1277834701_i-1238779_i-1277832286_i-1238694_i-1277940188_i-1238553_i-1277930041_i-1237548_i-1277835391_i-1237870_i-1277824642_i-1238512_i-1277862071_i-1237549_i-1277835600_i-1238703_i-1277835155_i-1237983_i-1277827135_i-1238546_i-1277825119_i-1232839_i-1278556970_i-1237536_i-1277825264_i-1238789_i-1277832243_i-1238761_i-1277825366_i-1238603_i-1277829747_i-1237572_i-1277836226_i-1213402_i-1277916331_i-1236941_i-1277811529_i-1238561_i-1277856125_i-1238872_i-1277847142_i-1238477_i-1277852816_i-1238890_i-1277851640_i-1200055_i-1278017840_i-1237975_i-1277871382_i-1238974_i-1277916093_i-1238937_i-1277871664_i-1238946_i-1277873393_i-1237667_i-1277869430_i-1237385_i-1278000893_i-1239050_i-1278063124_i-1213873_i-1277915787_i-1226181_i-1278580979_i-1238384_i-1277899153_i-1239077_i-1277949263_i-1239107_i-1277940073_i-1239404_i-1277996941_i-1239332_i-1278042405_i-1239469_i-1278006710_i-1238886_i-1277990602_i-1237862_i-1278006353_i-1235583_i-1278004609_i-1239105_i-1277986282_i-1142724_i-1278016367_i-1237598_i-1278019541_i-1238596_i-1278020804_i-1237006_i-1278019798_i-1239309_i-1278019817_i-1233836_i-1278034673_i-1239828_i-1278102187_i-1239843_i-1278109015_i-1239800_i-1278108780_i-1239706_i-1278198399_i-1239913_i-1278149413_i-1235742_i-

Apache/2.2.3 (CentOS) Server at mothering.com Port 80

I'm running:
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6 (.NET CLR 3.5.30729)
FF Add-ons:
AdBlock Plus
Better Gmail2
Better GReader
Evernote Webclipper
Favicon Picker 3
Faviconize Tab
Permatab Mod
Screengrab
Session Manager
Vacuum Places
XMarks

Windows Vista machine