Edward Furlong Sentenced to 6 Months in Jail

Terminator star Edward Furlong has been sentenced to six months in jail for violating a protective order as part of his probation agreement.

Hopefully "Terminator 2" star Edward Furlong is used to the food in jail by now -- because the actor was just sentenced to another 180 days behind bars for violating his probation.

Furlong -- who's been in and out of jail a slew of times over the past few years -- was sentenced Monday in L.A. Superior Court ... stemming from 2 probation violations:

1. Using force against his ex-GF Monica Keena -- for which he was arrested twice. 2. Violating a protective order, which stated he was to have NO CONTACT with Monica.

As TMZ previously reported, Furlong was placed on 3 years probation back in 2010 for violating a civil protective order obtained by his estranged wife Rachael Kneeland. Furlong was required to obey all laws during the course of his probation ...

... which clearly, he did not.

Jacked from TMZ