Bug reporting in CCleaner Bug Reporting Posted October 27, 2006 IE7 cookie bug I've finally trapped the problem: it appears to be related to index.dat deletion. To keep cookie data as in the exception list, don't delete index.dat.... probably in the new IE7 index.dat there must be some pointers to cookies; once you delete index.dat some broken links happen and even if cookies are there it's like they aren't.......until a fix is there,,,,, I concur with your findings. Even though "Cookies" is unchecked/disabled in CCleaner, all cookies are deleted in IE7 and that it is most likely related to the "index.dat" file. If you look in "Internet Options", on the "General" tab, under "Browsing History", you will see that IE7 now includes "Cookies", "History", "Saved Passwords", etc. in it's own "Delete Files" utility. Whether or not CCleaner will be able to be programmed to circumvent this and only delete selected items rather than the entire gamut in IE7 as it does now will be interesting to see.