CC only cleans a relatively few important (i.e. active) index.dat files. Those that are locked by Windows, for example in Temp Internet Files, are cleaned but not deleted, and those that are able to be deleted, foe example in History, are. There are lots of small applications that let you look inside index.dat files, so you could use one of those to check what's being cleaned.
Whilst I don't get anything showing on Analyse, on my sys I can use Notepad to see what's inside C:/Documents and Settings/Me/Local Settings/Temporary Internet Files/Content.IE5/Index.dat, then run CC Clean Temporary Internet Files, then open ....../Index.dat again and it's empty. If you do this is your Index.dat uncleaned?
No, it doesn't appear uncleaned,,.The file is still recorded as 8,880KB for IE5. I guess that's were the concern arose...
Plus the cleaner doesn't register the fact that the Dat files are full and doesn't clean when dat box is the only one checked. Nice. Thanks for the insight..