windows 7 - Can't see a file that "exists" in Temporary Internet Files

I'm trying to shrink my C: partition, and I'm following the advice in this question:

How to shrink Windows 7 boot partition with unmovable files

I have the same problem of unmovable files, and I've disabled already System Restore, Pagination, Hibernation... and still can't shrink anything my 350GB C: partition that actually only uses 80GB.

I'm following the Event Viewer method explained in that question, I use the shrink option in the Partition Manager and then check the Event Viewer -> event 259.

That event throws this message:

Diagnostic details:

• The last unmovable file appears to be: \Users\Albert\AppData\Local\Microsoft\Windows
  \Temporary Internet Files\0AYu0utzFxpSlQ:cJa3UJYivVxT5eSKOsolvCA:$DATA


• The last cluster of the file is: 0x56f8b5b


• Shrink potential target (LCN address): 0x159fe49


• The NTFS file flags are: ----D


• Shrink phase:

The problem is that when I go to that folder (Temporary Internet Files) there's nothing there (I already deleted them from IE), but I have the folder options to show all hidden and system files.

Is it a super invisible file? If not, why do I get that message in the event viewer?

Any help would be much appreciated!