graphics problem after install

view story

http://forums.fedoraforum.org – I'm brand new to Linux, so there's probably a simple solution to this problem. I just installed Fedora 17 on my 2010 Macbook Pro. I got it up and running, everything seemed fine. Massive software update pops up. OK, install software update. Reboot. No problem. BAM, all of a sudden Fedora looks like Windows '95. The graphics got all messed up and primitive. Everything is working fine, it just looks hideous. What happened and how do I fix it? (HowTos)