I'm with Phonemes. Have the same problems with CCleaner wiping login-cookies since a few weeks back. Everything ran real fine until then and I really appreciated CCleaners "keep cookies-functionality" but as per above, that is unfortunately gone now. I just downloaded the lastest version, 2.17.853, but still have the same problems.
To test I have "unsaved" cookies and resaved them but to no avail, CCleaner still wipes a number the log-in-cookies that I want to keep.
The only change to this PC in the last couple of weeks is to have removed F-Secure and replaced it with Avast Home.
I use IE 6.0, no changes there.
Regards
PiPPi
Stockholm, Sweden