Bad CC - Instructions on how to find it and how to get rid of it (including list)

You will only have package-files with strange numbers in the dcbackup folder (the numbers are all there in my blog). But those are not the files you will see in your game. The installed stuff is compressed in the *.dbc files in your DCCache folder. The DCBackup is actually just a backup but since it tends to accumulate a lot of crap it's wise to delete the corresponding package files in that folder.

(I'm not entirely sure if I understand your question correctly)