Hi I have WinXP Pro PC Installed with Office 2003 Basic and just recently Excel started hanging as soon it started. I get a ' Not Responding' in Task manager, when I try and End Process it takes about 10 Mins for it to actually End. I get an entry in the Application Log - Date: 04/11/2008 Source: Application Hang Time: 13.09.58 Category: (101) Type: Error Event ID: 1002 User: N/A Computer: TC3 Description: Hanging application EXCEL.EXE, version 11.0.5612.0, hang module hungapp, version 0.0.0.0, hang address 0x00000000. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. -------------------------- The funny thing is that after it has eventually closed after the initial hang, it runs perfectly OK until next time the PC is rebooted and then the first Excel is run, it hangs. This doesn't appear to effect any other applications. I have tried an Office Repair with no luck, I even completely uninstalled Office from this PC then installed office fresh and the first time I ran Excel - it hung. Is this possibly something to do with XP itself? Any help would be greatly appreciated. Thanks.