it seems that I have the same problem
App window is frequently blanc after start, Maximise-minimise somуtimes helps me. Context menu in firefox is blanc too.
Natty updated from 10.10, Motherboard Asus M2NPV-VM with integrated video
uname -a
Linux assa 2.6.38-7-generic #39-Ubuntu SMP Fri Mar 25 19:38:02 UTC 2011 i686 athlon i386 GNU/Linux
it seems that I have the same problem
App window is frequently blanc after start, Maximise-minimise somуtimes helps me. Context menu in firefox is blanc too.
Natty updated from 10.10, Motherboard Asus M2NPV-VM with integrated video
uname -a
Linux assa 2.6.38-7-generic #39-Ubuntu SMP Fri Mar 25 19:38:02 UTC 2011 i686 athlon i386 GNU/Linux