The machine that I added a new graphics card to last month happened to be a dual boot machine. This was the first machine that I tried Ubuntu on. I was running Ubuntu 6.06 and this version sold me on the features of Ubuntu.
When I installed the new graphics card, I could no longer boot into Ubuntu. Well, I could no longer boot into Ubuntu normally. I thought about going down the path of manually changing the graphics drivers but didn't really want to try that yet.
I figured that I would just reinstall Ubuntu, and in the process upgrade to version 6.10. As luck would have it, the primary DVD drive died. I tried repairing it, making sure the connections were righ, but it still didn't work I ended up swapping the two DVD drives so that the DVD-R would become the primary drive.
With this modification complete, I was able to reinstall Ubuntu. I now have three machines that run Ubuntu, Whitney (the server), Shasta (this machine) and Lassen (the newest member).