If the suggested solution does not work:move the Temporary Internet Files
folder (after closing Explorer, Outlook & all other applications) as per
Microsoft Knowledge Base article ID 301057 "Temporary Internet Files Use More
Disk Space than Specified".
This deletes all hidden files in the folder, including OLK files produced by
Outlook.
Microsoft - please fix this bug that leaves OLK files 'stuck' in the
Temporary Internet Files folder! Not everybody has the time and expertise to
do the above, and will in time suffer a bloated Temporary Internet Files
folder.