Why Officescan?

I thought that was a security software for corporate networks.
They use it where I work, simply because the network handles highly sensitive data on clients.

Unless you tell Officescan to go ahead and kill what it's found, your N900 should be fine. But I use Avira Antivirus on my home PC and that flashes up a warning that Auto-Run is disabled for security everytime I plug my N900 in as mass storage.

Looks like Michaaa62 is on to something.