It took me years before I had the time to upgrade my wordpress. My original wordpress is version 1.5 and today I upgraded it to 2.0.4. I decided not to upgrade it to the latest copy as I believe its better to make it this way rather than jump to the lastest version since 1.5 can be consider a very old version. One reason also is that I havent read if there are some major upgrades from 1.5 to 2.1.2 copy.
I need to go now!