There seem to be a number of forum posts regarding problems with the Mac Pro EFI update issued in September.
I?m hopeful that this is in fact the problem, and its not a case of something more serious (either RAM or mother board failure).
Having now done 2 clean installs onto the MacPro both of which have a similar problem of display corruption when scrolling and performing random functions.
This problem started to appear just after the EFI update went onto my Mac Pro last month, and has become worse having installed 10.5. In fact, booting back into 10.4 the problem is hardly noticeable but can be seen when you look for it.
On 10.5 its very very noticeable However when I try and take a screen shot of the problem it seems to clear up – as though a redraw happens which removes the corruption.
