boot screen unreadable (screenshot)

Hi.

I've installed XBMCBuntu 11.0 on a Acer Revo RL70. I copied about 100 movies over to the internal HDD, set content, and rebooted. Now it gets stuck on a boot screen that is unreadable. I have tried rebooting and even unplugging the PC, but it does the same thing every time. Is there any way to fix this so I can see what I'm doing? I really don't want to have to reinstall and move 500GB of movies over the network again. Attached is a picture of the screen.







Any help is appreciated, of course.