I installed the updates yesterday and restarted. Upon restart, the dock was gone. I went into the preferences, and made sure everything was correct with the settings. Also, the background image is going bezerk, changing every 3-4 seconds, even thought it's not set to do so. Expose is not working, the "Application Switcher" (cmd + tab, sorry, don't know proper name) is not working, and there is a strange black background in nearly every window. Screenshot of what is happening is posted here: http://www.orange151.com/access/andrew/Picture2.png Please note weird look of text on windows, and black backgrounds in the fields. I've repaired permissions and restarted multiple times. i've never had this happen before... so weird. thanks for any assistance!