I had requested a withdrawal from Cambx via their supposed "preferred" USPS postal money order.  It literally sat there on my account for ONE MONTH, with excuses coming out the ying yang about "logistical issues."  Then it was there is a 2 week backlog.  Then last week it was "I will personally take care of it this weekend." 

I GIVE UP

I bought back BTC and transferred out of there.  SOMETHING is up over there, and no I don't think it is incompetence or overgrowth, they are doing something funny with customer funds.  I STRONGLY advise not using them.

Ticket after ticket and day after day they just ignored me.