Hi all Just noticed this problem in the last few months. Have a unibody 17" i7 MBP and get the screen corruption primarily when running Safari 5.0 (whatever the newest build is). Interestingly enough I run a program called gxfCardStatus and if I choose Nvidia rather than Intel (or Auto which = Intel) the corruption goes away. If I choose Intel again the corruption is back. Not sure if this is a hardware issue or just a serious bug introduced by Safari 5.0. I don't remember having the problem before upgrading. Any ideas ?