More trouble for extremely troubled "Terminator 2" star Edward Furlong -- he was arrested early this morning for felony domestic violence after allegedly getting physical with his girlfriend.
According to law enforcement sources, Furlong was at LAX with his gf around 1 AM ... and grabbed her arm during an argument.
We're told when officers arrived the woman had visible marks on her arm -- and Furlong was immediately taken into custody.
Furlong is still sitting in jail ... his bail's been set at $50,000.
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