DavidR
Here goes with some examples of the 11 biggest (Look at the size of Google Earth!):
(C:), NTFS, Capacity: 290,0 GB, Used: 69,9 GB (24%), Free: 220,1 GB (76%)
---------------------------------------------------------------------------
Total size: 37,6 GB, Fragmented Files (176), Total Fragments (2.391)
dbCache.dat 577 1151738493 C:\Users\AppData\LocalLow\Google\GoogleEarth\
Inbox 104 15834904 C:\Users\AppData\Roaming\Thunderbird\Profiles\dykv5912.default\Mail\Local Folders\
Sent 100 14860342
fla871.tmp 95 8958187 C:\Users\jon\AppData\Local\Temp\
Trace1.fx 85 5523395 C:\Windows\Prefetch\ReadyBoot\
Trace8.fx 81 5307781 C:\Windows\Prefetch\ReadyBoot\
flaC976.tmp 79 8394403 C:\Users\AppData\Local\Temp\
Trace2.fx 77 5019151 C:\Windows\Prefetch\ReadyBoot\
Trace10.fx 77 5018477 C:\Windows\Prefetch\ReadyBoot\
Trace9.fx 69 4489707 C:\Windows\Prefetch\ReadyBoot\
fla907C.tmp 66 8503806 C:\Users\AppData\Local\Temp\
---------------------------------------------------------------------------
Given the Sys Info at the top, you may feel that I am making a fuss about nothing. Vista's defrag left these alone and so did Defraggler.