[TomGuy]

There are a few Linux viruses in circulation. More will surely come as more start using it.

Same with Mac's. Just this past week there was a thread on a Mac 'vunerability.'

If every one stopped using Windows tomorrow and changed to Mac or Linux, the virus makers would increase their attacks on those.

[zeugma]

If these types of attacks start appearing in the Linux world, they will be much easier to get rid of than the windows variants because of the way that Linux and X works. Unless you are a complete moron and run as root, then cleaning up after these attacks will be a matter of deleting a few lines from a few text files. Programs executed as a user simply can't attack in places that would be hard to get rid of unless they find some new local root exploits to do their dirty work.

I'll bet that if some of these scum figure out a way to attack Mozilla for Linux, there will be scripts available within hours that you'll be able to call as a part of your 'startx' script that would automatically look for the offending strings in your config and strip them out automatically.