there is actually a registry fix for that problem with mcafee. Its for w2k, but it might work on other OS's. I'm not sure if it actually works because i've never tried it- i simply got rid of mcafee and left it like that. Its probably only a matter of time till my computer gets sick...
Open Regedit
HKEY_LOCAL_MACHINE
SOFTWARE
NETWORK ASSOCIATES
TVD
SHARED COMPONENTS
ON ACCESS SCANNER
McSHIELD
CONFIGURATION
Double-click on the ScannerThreadTimeout and change the value to eight f 's
(ffffffff)
Close and restart VShield and it is a vast improvement!
Also, I'm not sure if the latest version of virus scan, which is 5.21 I think, has fixed this problem already.