To disable office open file scanning, run the following command at the Start -> Run Command:
regsvr32 /u "C:\Program Files\avg\AVG8\avgoff2k.dll (make sure this is your avg directory)
After successfully unregistering the DLL you will see:
DLLUnregisterServer in C:\Program Files\avg\AVG8\avgoff2k.dll succeeded.
then you could turn it back on someday
regsvr32 "C:\Program Files\Grisoft\AVG7\avgoff2k.dll
Pdf version of this solution: AVG-Removing_or_Disabling_the_AVG_MSOffice_plugin.pdf
Nir.