http://www.hackmaine.org/
Its not a linux user group explicity, but we do alot of linux things. We have weekly meetings in the bangor Area, And would say that 80% of attendees are linux users.
The Other explicitly linux groups (to my knowledge in the mid coast area) have deterioated. I wellcome all to our meetings, bring your projects, linux questions, or whatever, just com and hang out.
