On a Linux desktop (not a mail server for Windows machines, or similar), but sharing a network with other Windows machines, would you say your network is more or less secure running a Linux antivirus product? Or does it make no difference either way?
I'd argue that you're extremely unlikely to end up in a situation where you're unknowingly causing problems for Windows users because you're silently sending viruses around the network. If anything, on a closed network, repeatedly transferring the updates from an external source onto the Linux desktop is likely to reduce your security, if anything.
Thoughts?