Disastrous!

I was a staunch KIS-users individual. Until I have renewed my license for three weeks before the current Kaspersky Internet Security 2009 with KIS 2011. Since then, does the work on your PC - and in particular surfing the Internet - no more joy. If KIS begins to work, I have to adjust my work. Because everything stands still, no click responding, the browser crashes. That's a No. Now I have to willy-nilly look for another Internet Security out and invest again. Very annoying!