Это довольно старая тема. На сайте производителя ТимСпика (http://www.goteamspeak.com/news.php) была на этот счёт информация:

The Problem
Since we were informed of this issue the Teamspeak Team has been heavily involved in trying to determine the accuracy of this claim. After rigorous internal testing and numerous phone calls into all of the major antivirus companies including Symantec (Norton Antivirus), Network Associates (McAfee), and Trend Micro, NONE of these companies can verify NOR deny that a virus actually exists in "keypress.dll".

To the best of our collective knowledge, it is so far more likely that this is a "false positive" -- meaning that the antivirus application is finding data in keypress.dll that LOOKS like the same sort of data found in an infected file containing the Trojan "PWS-Wexd" (virus)...even though the file is most likely not infected at all.

If you are still truly concerned that this may actually be a virus, please try visiting the following link:
http://us.mcafee.com/virusInfo/defau...virus_k=100476
This URL contains detailed information on the PWS-Wexd Trojan, including a section on "indications of infection" -- which we have meticulously verified so far do NOT exist on anyone's supposed infected computer.