I run Norton and it flagged up the same thing; did an auto-delete too. I've imagined it to be due to it heusterically scanning (i think i spelt that right, means it looks for virus code within files instead of virus files). Up side, it can catch a lot of viruses (even ones it doesen't fully know). Downside, you easily get false positives some of the time (i suspect mine was, as the PC it came up on practically never goes on the net and i search any USBs that go onto it using my laptop). I bet it was a false positive on yours too Tyrian, but might be best to leave it quarantined until you can confirm that as i'm not an expert.
So for the record, is FS2NetGV is not vital for FSO, judging by The E's response?