>>Is the McAfee program a LAN version, or personal? If it's personal, you
>>should upgrade, or switch to another similar product.
>McAfee program is updated frequently by the LAN Administrator everytime we
>log into the network.

This is the copy on your workstation. What I'm asking about is the copy on the server. If it's set to scan the files every time they're opened, that's why you're getting killed with the second, third, etc. user.