Mail.app icon changing brightness for no apparent reason.

Question

I'm seeing a weird issue, where the Mail.app icon is slowly changing brightness over time. Starting normal, then over the course of a couple of hours, goes either brighter or darker.
Restarting Mail.app "resets" it.
This is how it looks currently: http://dl.dropbox.com/u/615699/Screen%20shot%202010-10-19%20at%2019.14.13.png
I did not see this issue on Leopard.
Does any one here know how to fix this?

Answer 1

Could be the problem?
If the issue is limited to your user account try starting up Safe Mode (It will take more time to startup in Safe Mode because it runs a directory check.)
If your Mail icon functions correctly that way, go to System Preferences >> Accounts >> Login Items, and remove them. Boot normally and test. If not go to/Users/yourname/Library/Contextual Menu Items and move whatever is there to the desktop. Then do the same with /Library/Contextual Menu Items. Lastly, try moving/Users/yourname/Library/Fonts to your desktop and restarting.
Log out/in or restart, if that sorts it start putting items back one at a time until you find the culprit.
-mj