i have a recent model MBP that used to work fine and still sometimes. it is running 10.5.4 i got this problem when i start my computer and it shows me the desktop. In a normal startup you will see the desktop files and folders you have and you will go on opening your folders and files and applications instantly after startup. However, i only see the background of the destop for five minutes. I dont see the files i have on the desktop, i cant open any files or folders. however, i can run the applications on the dock. when i press option+command+escape i see that the finder is not responding and even if i relaunch it, it wont start until it decides to!, normally after a few moments. I did an archive and install once and now formated the computer but is still get thsi problem 80% of the times i start up my computer. If the computer is asleep and it wakes up, then i finder is working instantly. If i log out or restart, finder is not responding after log in. any ideas? thanks.