I had a problem copying anything(text, files, etc.) and then pasting it. It was like it would retain the info for 1 second and then lose it. So unless I was able to copy/paste within 1 second, it would do nothing.
The reason this is happening seems to be Offline Files and it constantly taking snapshots. I think SP2 enables it automatically. The resolution is to disable offline files by opening windows explorer and go to Tools->Folder Options->Offline Files, and unchecking the "Enable Offline File" box. After that go to Tools->Synchronize, and not only uncheck, but remove everything possible from that list. Once you reboot the problem should be solved. This is what did it for me anyways.
The reason this is happening seems to be Offline Files and it constantly taking snapshots. I think SP2 enables it automatically. The resolution is to disable offline files by opening windows explorer and go to Tools->Folder Options->Offline Files, and unchecking the "Enable Offline File" box. After that go to Tools->Synchronize, and not only uncheck, but remove everything possible from that list. Once you reboot the problem should be solved. This is what did it for me anyways.