I'm going through something similar. I'm on my second week on a full dose of Seroquel (150), but ever since I've started taking it I've been staying up late, and I haven't been tired at all in the days. I am usually falling asleep on my feet all the time without meds, so this is really weird for me. Although I can't say I've been sleeping less but it's on the other end. I don't wake up in the morning (not abnormal just annoying) but I can't sleep if I've just taken my Seroquel. I've started taking it at 7 so I can try and sleep at 12/1ish. God help me if I take it late.

Glad to know I'm not the only one though. I was getting worried!