Interesting. But is there a case where you only have "LimeWireInstallDate" and not the others?

As to Gator. He is in the software directory of Lmachine" I would also add Comet System's comet cursor as it does massive tracking and all the women think it is SO cool! At least they are "honest" and give an uninstaller" Note: most spyware progs like SpyBot will take care of these two.

"Comet Systems"  => qr/comet systems/i,
"Gator.com"      => qr/gator.com/i,
[download]

Change that! I ran the uninstaller and surprise, the tracking stuff remained. Your spyware cleaner will fix it!