Trend Micro for NAS and CAVA

I have a couple of questions regarding the topic.

1) I have seen these definitions in the Exclude section of virus configuration file:

~$* >>>>>>>>

What are those?

2) Customer seems to be claiming that virus are still getting through. When I looked at the server_viruschk server_2 -a output it mentions:

Total infected files: 25

Modified infected files: 25

It's not deleting them, but the AV is modifying by renaming file to *.vir.

Also, there are some viruses that seem to be popping up in the RECYCLER folder for each home user and *.inf files are infected. It looks to be an autorun virus that is continuously being propgated when autorun.

I've asked the customer to check to see if autoplay is disabled on a GPO level.

Anybody have any insight on #2? I don't think CAVA is broken per say, its just the AV software isn't doing something properly.