NIS 2010 Background Full Scan Hangs Windows 7 (64)

I am running NIS 2010 (17.5.0.127) on WIndows 7 Ultimate 64 and it seems lately that whenever a background scan kicks off it freezes my PC - requiring a hard reset to recover.I had been running NIS 2010 (and 2009 prior to that) without issues.

 

Any suggestions?

 

Thanks,

 

-Paul