I've been using CCleaner for years, and have never had an issue with anything being deleted that I didn't want deleted. However, Windows 7 seems to forget when I told it not to warn me again on certain things, and I'm wondering what I need to uncheck to keep Windows from warning again.
My current issue is that when I exit "Batman: Arkham City", every time it returns to the desktop, it must slow the cpu and/or gpu for a split second, and Windows 7 warns me that my computer is slow, and suggests I change the desktop color scheme. I click "don't warn me about this again". I continue to get this warning sometimes, and am guessing it is due to something CCleaner is wiping that tells Windows I asked not to be warned. Which check box covers the area in which this would be saved?