Oh, I kind of wish I didn't know that multiple night wakings was the exception at this age. Oren still wakes like 4 times a night too. Last night he had to sleep attached to the boob. So I didn't sleep, at least until I growled "I can't handle this any more!" And then DH woke up and took him downstairs at 4am, where he promptly fell asleep.
I'm starting to think it's co-sleeping too, because he usually will stay asleep in his crib until I come to bed. So then he wakes to nurse once at 11pm, then again at 1am, and 3am, and then he pops on and off intermittently after about 4 or 5. Often I can't handle it at this point and send him away with DH. We have a queen and a single side by side.
He's also not much of a napper - 45 minutes tops. He's 21 lbs.