This afternoon (between 3:50 and 4 PM EST) we were visited by a new member who maliciously hid some code in his posts that caused anyone who viewed the thread with his posts to either get an error message or be presented with the directive to download an update to Adobe Acrobat called adobe_update.exe. In fact, this executable can cause computers to be infected with the 'Koobface' virus. He has since been removed and his posts have been deleted (as of 10:25 EST) so the threat of infection no longer exists.
Even if you opened those threads, you only may have been infected if:
1) You installed the adobe_update.exe file AND
2) Your virus software isn't up to date
If you think you were infected with the virus or want to learn more, please browse to this link and follow the removal steps:
http://tonysgeektips.wordpress.com/2...oobface-virus/
If you have any questions, let me know. It may be best to post and follow-up questions here as they may be of interest to others.