I'm new to Mac Forums. I have a problem I can't resolve and I can't find any reference to online. I am using a 2008 macbook pro with Lion 10.7.4. After I start my macbook, whenever I select a desktop icon, I can't deselect it unless I move the icon back to its original location and press esc. Similarly, in Adobe Acrobat Pro 9.5.1 when I select text, I can't unselect it and have to close the application. However, if I put my computer to sleep and then wake it up, I can select and move things normally. The problem reoccurs when I shut the macbook down and then turn it back on.

As you can imagine, this is frustrating. Any help or advice would be much appreciated.