Hi, I have a Mac OS X 10.6.7 MBP running Parallels 6 clean install. I have dual monitors going most of the time and I think it's related to that, but at random occasions, usually once a day I get all my applications turning white. I can't see anything in them at all, the space that the window occupies is completely white. If I click where the top bar of the app is supposed to be, I can drag it around so I know that it hasn't crashed and if I switch out of Coherence, all the apps go back to normal in the Windows XP desktop. If I switch back to Coherence, some times the windows will still be white, some times they will be back to normal. If I unplug my secondary (main) monitor and plug it in again, this usually resolves the issue. I have turned off all power saving features and the machine isn't being left idle, it can be in active use. The same thing happens with both of my two monitors as well so I don't believe it is related to the monitor. Can anyone help? Thanks, A.