download the NoScript plugin for FF. Disables flash, activeX, javascript from all sites except ones on your whitelist. Its a bit of a pain the first couple weeks as you add your regular sites to the whitelist, but after that, its a godsend. I no longer fear any viruses or malware when I surf. It wont protect against cookies, but you've already covered how to get rid of those. :thumbsup:

DrSpiggity