[ronnier]

I recommend removing the Adobe Acrobat plugin from FireFox. Just last night while visiting a trusted site, it tried to launch an exploited Adobe Acrobat file. The file was served from a 3rd party ad site that had been hacked. Dangerous.

[colonelxc]

Very good advice. Also, if you do use adobe, make sure you are fully updated (9.3.1). The 9.3.0 libtiff exploit is available via metasploit:

http://www.metasploit.com/modules/exploit/windows/fileformat...

Adobe themselves also need to update, since if you go download from their website, they'll give you 9.3.0:

http://ardownload.adobe.com/pub/adobe/reader/win/9.x/9.3/enu...