>Do you mean a server-based virus scanner? If so, this can't be the case, since I can go to another workstation and delete the file with no problems.

To add to what Wayne has said, Evan, have you tried completely removing the AV on the Acer clients (or one of them, anyway), just to be sure the AV is not somehow related?

Added cautionary note: if/when you try this, do not access the web, etc., or any other "risky" places, of course, from the Acer.