I'm running NIS 2005 with Anti-Virus and even though I'm running Live Update regularly, it's telling me that my virus definitions are out of date. Also, I seem to be accumulating very large VIRSCAN and TCSCAN temp files in the folder C:\Program Files\Common Files\Symantec Shared\VirusDefs. I'm starting to run out of disc space - down ro 4GB. Can I safely delete these files?