Best Antivirus Engine

yesterday i've installed a newest version of kaspersky internet security 2011 and i am little disgusted... of course everything worked great untill i decided to scan my pc - it found a lot of 'infected' software (most of them are cracking tools and i was not suprised) but when i decided to remove one of the installation file, kis was scanning pc about 20 minutes (i dont know why) and after this decided to reboot pc without any notification... after reboot there was a monit about necessity to restore computer, i couldnt hide this, so i had to do it... nothing changed after restoring (only notification disappeared) but then there was an another notifiaction - about file that was detected as infected and deleted by kaspersky. i couldnt repair this and hide it, so i had to reinstall kis and for now there is everything OK, but we will see how long

of course newest interface is underdone... i'm using a non-english software and it's not fully translated. maybe in the next version it will be fixed, hope to be