Options, Include allows one to include files and/or directories for cleaning. However, read-only files are not found by CCleaner. Is there a way to overcome this? I agree that such a possibility needs to be used with care.
I just noticed this as well. I just checked about 50% of my installed programmes and in all cases CCleaner has an installed date one day earlier than Windows "Uninstall or change a program". (Vista Home Premium SP2). It would be interesting to know why this is.