I’ve had intermittent problem with my MacBook Pro (2.4ghz Santa Rosa) tinting the entire screen blue after waking from sleep. It seems to be fairly common, and fix is reasonable simple. I hereby dub this problem the Blue Screen of Mild Inconvenience.
I just realized that it didn’t happen at all until I re-enabled the “Require password to wake this computer from sleep or screen saver” option. Seems to be related.
Discussion