We found the answer to the error on our test computer! First we ran Com Explorer found here: http://www.4developers.com/com/ Then running it one item came up in RED in the left column. This led to noticing that SCRRUN.DLL was completely missing from our computer. We double-checked using Find and it was not there. We had a copy of it on another drive and copied it to C:\WINDOWS\SYSTEM. We then did Start>Run>regsvr C:\WINDOWS\SYSTEM\scrrun.dll and hit enter. (Notice there is a space between 'regsvr' and 'C:') A popup said the dll was now properly registered. Next we once again opened SpywareGuard and clicked on a few items. Wow! No lock-up and no more problems! We mentioned the long story for those who may need the extra instructions or who may have a different dll missing. Best wishes!