Vista Ultimate File Names disapeared Help!!

[six-h]

My 500GB HDD is partitioned into 4 "Drives". I try not to put anything on the
"C" drive where the OS resides, but of course, some software muscles in
regardless!
"D" Drive is my Recovery sector (Little on it at present). "E" drive is home
to my Applications, and "F" drive is for my Data Files.
Viewing any of these Sectors/Drives in Explorer, my prefered view is "Large
Icons", under each of these icons is the "File Name".
This evening I noticed that on the "F" (Data) Drive, only the large icons
are showing, ie. there is no text beneath the Icon with the File Name.
Selecting ALT>View, my preferences (Large Icons, and Auto Arrange) are
selected, and "Sort By" shows "Name" and "Ascending".
These settings are exactly the same for each of the Sectors/Drives, but only
the "F" drive does not show the File Names.
I have made no changes that I can imagine would cause this, however earlier
in the evening I did download and install "Paragon Partition Manager 2009se".
Can anyone advise me how to make the File Names visible again??

 

[six-h]

So Sorry!
I have posted this question in the wrong forum, please disregard it as I
have now re posted it in the "Vista" forum under "Finding and Organising
Files".
Of course, if you have the answer, I'd be pleased to hear from you from
either source!!