No longer cleaning IE6

I use IE6 (along with many other browsers) on one machine, mainly to see how my web pages will render in older browsers. CCleaner 3.03 no longer cleans IE6. All fine up to 3.02, to which I have reverted until there's a fix. And no, it's not that it only looks like IE6 hasn't been cleaned, it really doesn't get cleaned.

CCleaner is outstanding software otherwise!

How do you understand that it is not cleaning. what areas are you checking?