I don’t know is it correct to publish a link with a virus here… we use adnm, some users visited http://odnoklassnikis.info/load********** avast showed that there was a virus, and it was repaid (Win32:Rootkit-gen [Rtk] ). But after restarting - most windows services stoped, and we couldn’t start them. Any antivirus program can’t find any virus… to solve the problem we have to reinstall software… there was other antivirus programmes on other computers, and there was no problemms with services, what’s wrong with that virus and avast activity on windows…?
What was the name of the file detected? (You can find this in the avast log.)
It’s concurrence.
You received wrong avast update and kill svchost.exe system file…
Look this thread.
http://forum.avast.com/index.php?topic=36078.0
Ñïàñèáî áîëüøîå, èìåííî òàêàÿ ëàæà è ïðîèçîøëà. â÷åðàñü óæå âû÷èòàë â ðóññêîì ôîðóìå òåìó… 
ðåñïåêò