It looks like the third time's not a charm for Dennis Quaid, as the actor's (third) wife, Kimberly Buffington-Quaid, has filed for divorce due to a "conflict of personalities ... that destroys the legitimate ends of the marriage relationship and prevents any reasonable expectation of reconciliation."

The couple of eight years married at an intimate ceremony on his 500-acre Montana ranch back in 2004 and have one set of twins, now age four.

According to TMZ, there is a temporary custody order in place, which stipulates that both parents get time with the kids and that the little tykes cannot be removed from school without a prior agreement. The order also gives Kimberly possession of their main residence and the Mercedes.  He gets the Cadillac Escalade and a condo — but they both have to cooperate with each other in using the Range Rover. (Oh, divorce Hollywood-style.)

Kimberly is asking that all of their community assets be fairly divided. In Dennis' answer to Kimberly's petition, he says he wants her to get nothing. Sounds fair to us. Both Kimberly and Dennis are ordered not to say anything "vulgar, profane, obscene or indecent" to each other — which, we gotta admit, is just good policy... whether you're getting divorced or not.