I recently upgraded to Kaspersky 2011 on all six of my Windows computers.  Five are running XP and one is Windows 7.  All of them stopped running I until I finally gave up and uninstalled Kaspersky 2011.  "Kaspersky support" is an oxymoron.  There is NONE!  When you try to find Help they take you to a web page that encourages you to upgrade to 2012 (free).  I tried it but it produced the same problem.  The culprit is a program called AVP.EXE.  It takes over 99% of the processor cycles and more than 400 MB of memory (RAM).  That sure keeps the viruses away!?  Nothing else can run in that environment:  no virus and no program either.  The computer becomes worse than useless.  Kaspersky 2011 and 2012 have wasted three days of my valuable time while I diagnosed, tried to repair and finally had to uninstall.  Even the uninstaller had trouble getting enough cycles to complete.

The good news is that there is a happy ending.  I have uninstalled Kaspersky and my computer is working fine again.  Now I will have to waste the rest of the day fixing the other five computers.
I recently upgraded to Kaspersky 2011 on all six of my Windows computers. Five are running XP and one is Windows 7. All of them stopped running I until I finally gave up and uninstalled Kaspersky 2011. "Kaspersky support" is an oxymoron. There is NONE! When you try to find Help they take you to a web page that encourages you to upgrade to 2012 (free). I tried it but it produced the same problem. The culprit is a program called AVP. EXE. It takes over 99% of the processor cycles and more than 400 MB of memory (RAM). That sure keeps the viruses away!? Nothing else can run in that environment:  no virus and no program either. The computer becomes worse than useless. Kaspersky 2011 and 2012 have wasted three days of my valuable time while I diagnosed, tried to repair and finally had to uninstall. Even the uninstaller had trouble getting enough cycles to complete. The good news is that there is a happy ending. I have uninstalled Kaspersky and my computer is working fine again. Now I will have to waste the rest of the day fixing the other five computers.