Talk to me about the 13 month sleep regression

[wishin'&hopin']

After a month and a half of GREAT sleep for all of us (8p-4/5a every night!) we've gone back to multiple wake ups.  I've read a bit about the "13 month sleep regression" and I am curious...

Did your child have a sleep regression around 13 months?

What skills/developmental things emerged in the midst of all of it?

(I know...teething, but during the month of GREAT sleep he got 3 molars...so I'm not apt to blame the teeth!)

[KellyandBean]

Is he walking yet? i noticed my DD having trouble with sleep around 11 months and i think it was because she was learning to walk. I don't recall anything at 13 months except her trying to drop to one nap  (which she offically did by 14 months)

[wishin'&hopin']

we're at one nap and have been for about a month and he's been walking for two months.  I'm wondering if climbing is the skill because he's certainly upped the ante on that!  Thanks!