Unfortunately False Positives are a fact of life but some companies will either deny it or ignore it. It even happens on occasion with avast, who if correct acknowledge it and correct it very quickly.
This is the major reason where you should never delete as a first action in an AV program but move to the chest, etc. In the case of programs that supposedly make a back-up which you can restore, this is not so critical.
Surely ewido did specify the file, 'C:\Program Files\NetMeeting\netmeet.htm' and not just the netmeeting folder?