I've had this problem come up several times. This is just the first time I thought to take a screen shot of it. http://i212.photobucket.com/albums/cc55/ArtOfWarfare/missingdock.jpg I've noticed 3 things are wrong... 1.) the dock is completely transparent 2.) the names of files in a stack are just lines 3.) the icons of files in stacks are missing completely I've had this problem several times. Restarting finder seems to fix it but... I'd rather just not get the problem in the first place. What causes it, how can it be avoided?