IE7 and Auto Logon

Just downloaded CCleaner 1.35.424 hoping the problem with staying logged on to sites in IE7 might be resolved. Ticked "delete index.dat files", checked all cookies were whitelisted, ran the cleaner, all auto logons lost. Have to un-tick delete index dat files to stay logged on.

Any comments? Any fixes planned?

From MrG in the announcements section:

The IE7 cookie handling is more complicated than I thought so I've updated it to solve some issues, but it may not solve them all.

I thought it's best to release now with the current fixes than force everyone to wait several weeks.

Thanks for that.

I think it's not only cookie handling...there is something about the way IE7 uses index data files to retain logon info, on the face of it.

Anyone have any ideas/knowledge about this?

Anyone have any ideas/knowledge about this?
Yes.

The index.dat programmers at Microsoft.

I believe it is a closely guarded secret so that it does not escape into the LINUX world.