I know about the delete files button, it doesn't delete all the files.. to delete them manually:
1) Open Windows Explorer
2) Open "Windows" Folder
3) scroll down to the folder called "Temporary Internet Files"
4) don't open the folder, instead, click the + sign beside it
5) when you click the + sign, a folder should appear called "Content.IE5" (or something like that)
6) Click on the arrow beside "Content.IE5"
7) now, there should be folders with random like names(eg: "XVCGDBSH"). Open them one by one, if your IE sucks, like mine, there will be files in these folders, then just delete the files
I hope that's what you wanted
''Mmmm.. Tastes like Nazca!''