Flickering frames in contacts

[JAS Photo]

I'm running Win 7 - PM Build 13444 - Recently, after running for a short time - all frames in a contact sheet would be blank except for a random flickering of different frames till I exit PM - works fine for a while then starts again.
I am upgrading to a newer build but don't know if that will help - I hope so!

[JAS Photo]

Only grey and the file name even the .exe or other files are only grey and the flicker is so face & random I can't make out the frame - it conrinue as I scroll.

[Kirk Baker]

Only grey and the file name even the .exe or other files are only grey and the flicker is so face & random I can't make out the frame - it conrinue as I scroll.

When in PM, go to the Help menu and choose 'Reveal Support Data...'.  Attach the file it produces to your reply.

Thanks,

-Kirk