Have you been getting an intermittent error similar to the following during a TFS
Team Build execution (within the CoreGet target) ?:
Access to the path 'C:\Documents and Settings\tfsbuild\Local Settings\Temp\TFSTemp\4580{#$@;._}808'
is denied.
If you look around, you will find a few folks who point at antivirus software as the
culprit, but in our case it turned out to be the disk defragmentation service…