We have 3 office computers on Windows 7 Pro and one on Windows XP and a server running Server 2008 R2. The Windows 7 computers will freeze at what appears to be random times when saving a file. This happens mostly when saving scanned files or Outlook attachments. It has never happened in Word or Excel and never happpens to the Windows XP computer. Also it doesn't matter if the file is saved locally or on the network. Very often the computer that freezes will freeze 3 or 4 times in a row and then work fine for several days. I have been keeping Process Explorer open on one monitor to try to monitor what is happening but havn't found anything so far. By freezing I mean the programs stop responding and lastly the mouse stops. A reset is the only way to get up and running again.