After over a year of having the same IP number it finally changed. I was online last night late late and suddenly my cable modem dropped offline. I was a bit peeved, but was like, whatever. After a few minutes it came back online. When I logged into my unix box, I happened to do a 'w' and saw that my IP# had changed.
I'd gotten so used to the IP# I had. The cool thing is that DNS was updated by the time I woke up in the morning, so it wasn't THAT bad.