Tell Me, What Did You Virtualize?
Here's a list I use currently (at home):
Mozilla Firefox 220.127.116.11 NL
Printkey 2000 V5.10
VLC Player 0.8.6F
Foxit Reader V2.0
IE7 Pro V2.0
Show us your list, to generate this, is rather simple;
Open a dos command and type:
svscmd Enum >C:\List.txt
Press enter and afterwards close the Dos Window, now go to you C: root and there you have the list of layers you use.
Remove (search and replace) "Layer Name:" and show us what you use.