Personal - Beat [adj. informal]

I've had a difficult few days (and nights) at work (my fault, but still) and friday I had a checkup with my orthodontist. Anyway, while reading a book I had this "I'm too tired to follow what's going on" feeling, turned off the PC and went to sleep. I don't usually turn off the PC, but sometimes when it's not doing anything I want silence at nights. I woke up at 15:02, looked at the watch and thought "No wonder I was so tired, I probably stayed up till morning…" and then "No way! The light was still up in the living room!" so this is from /var/log/messages:

Jul 15 23:56:50 tux syslog-ng[8579]: syslog-ng version 1.6.8 going down
Jul 16 15:09:56 tux syslog-ng[8820]: syslog-ng version 1.6.8 starting