[aloki]

на сайте кашмарского написано что это может быть вызвано вирусом

Symptoms of network infection.

1. Network traffic volume increases if there are infected PCs in the network, because network attack starts from these PCs.

2. Anti-Virus product with enabled Intrusion Detection System informs of the attack Intrusion.Win.NETAPI.buffer-overflow.exploit

3. It is impossible to access websites of the majority of anti-virus companies, e.g. avira, avast, esafe, drweb, eset, nod32, f-secure, panda, kaspersky, etc.

4. An attempt to activate Kaspersky Anti-Virus or Kaspersky Internet Security with an activation code at a computer infected with the Net-Worm.Win32.Kido network worm may result in abnormal termination and give one of the following errors:

Activation procedure completed with system error 2.
Activation error: Server name cannot be resolved.
Activation error. Unable to connect to server.

http://support.kaspersky.com/faq/?qid=208279973