Maybe I shouldnt respond to these threads but really?

Yes, how terrible to force parents to be responsible when they have chosen not to do so voluntarily. Child support sets reasonable amounts to be paid regularly, sure they might seem unreasonable when hit all at once but maybe if people were just as concerned and just as accountable for being in child support arrears as rent arrears then there wouldnt be financially significant debts in the first place.

I guess tough luck if the other parent needed the child support for rent themself in the first place?
Yes, I totally agree parents should be responsible. Dh always paid up until we got together, then she wouldn't let him see his DS anymore. DH didn't want to take it to court, hoping she would come to her senses, but she moved away and that was it. So DH refused to keep paying until an agreement was made. She had a new boyfriend (who drives a Mercedes) and her mother has GIVEN her a house. She lives with him and and they rent out the other house. When he called and told her we couldn't pay rent that's when she laughed and hung up.