and what ends up happening is that i always regret going to bed really late when i have to wake up early the next morning. and it's not like i have anthing really important to do in those hours of the night either.

anyone else have erratic sleeeping?

I have this problem too. Sometimes I'll wake up at 2:00PM!!!  

i think what's worse is when i take a nap that's a little too long, and then at night i no longer can fall asleep because of the nap.