Apparently, there is an issue with the latest AVG update for users of the 64-bit Windows 7. The Washington Post had this in their 'help file' column with two fixes;
http://www.washingtonpost.com/wp-dyn/content/article/2010/12/04/AR2010120402822.html
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"Without the darkness, how would we see the light?" ~ Tuvok

Editor for Television Category