[the real McCoy]

Found this post in another thread.

http://vintage-erotica-forum.com/sho...2&postcount=16
Iused tothinkfirefox was the best around buteven running it with Adblockplus and noscript and AVG, I have had it in the shop twice in 2 months to have all the spyware dumped!

One explanation could be that the Microsoft .NET Framework 3.5 Service Pack 1 update, pushed through the Windows Update service to all recent editions of Windows in February 2009, installs the Microsoft .NET Framework Assistant firefox extension without asking your permission.

This update adds to Firefox one of the most dangerous vulnerabilities present in all versions of Internet Explorer: the ability for websites to easily and quietly install software on your PC. Since this design flaw is one of the reasons you may've originally chosen to abandon IE in favor of a safer browser like Firefox, you may wish to remove this extension with all due haste.

This from:
http://www.annoyances.org/exec/show/article08-600

/trm