Thanks for the responses, everyone!
The main reason why I asked this is because my warranty expires before my next year of college starts, and I'd hate to have to replace it in the middle of a difficult course. Perhaps a little more background information is needed in order to determine whether I should keep or replace my current laptop. Here's what all I know:
-I've had my Dell laptop since August 2000.
-It's traveled with me to and from Boca Raton, FL and Alexandria, VA a few times (only during college breaks).
-In college, it spends all of it's time in one place (same deal at home).
-It's usually on for about 12 hours a day six days a week, 8.5 out of 12 months of the year (it spends the remaining 3.5 months in cold storage).
-I had to format the original hard drive once (in December 2000), then replace the hard drive in August 2002 after the HD was damaged (possibly during my flight home).
-Aside from all that, it's been very good to me, and I hope that if I keep it, it'll last another year (or at least long enough for me to get through college).
So, should I keep my current laptop alive (and possibly buy a spare battery or drive for backup), or cast it aside in favor of a new one?