230quaidbh092009_08_X17.jpg dennis quaidDennis Quaid's wife Kimberly Buffington-Quaid has filed for divorce from the actor, after eight years of marriage, TMZ reports.

According to divorce documents filed by the soon-to-be ex Mrs. Quaid, "The marriage has become insupportable because of discord or conflict of personalities ... that destroys the legitimate ends of the marriage relationship and prevents any reasonable expectation of reconciliation."

There is also a temporary custody order in place, so that both Dennis and Kimberly can split their time with their 4-year-old twins, who nearly died shortly after birth because the medial staff at Cedars-Sinai gave them an accidental overdose of the drug Heparin.

The temporary order also gives Kimberly possession of their main house and the Mercedes, while Quaid will get the Cadillac Escalade and a condo.

The temporary order says, "The parties shall cooperate with one another in using the Range Rover..." and the ex-couple are also ordered not to say anything "vulgar, profane, obscene or indecent" to each other.

Dennis and Kimberly tied the knot in 2004.