There are actually quite a few threads on this topic. I posted one a couple weeks ago also!
They never charged my deposit either and I booked in late February. I called to make sure my reservation was there several times and I called again today. They just don't seem to be consistent with this policy. I wouldn't worry about it, seems sometimes they charge the dep. before you get there, other times they wait until you get there to charge anything.
They don't seem to have a plan in place for room deposits. When I booked HRH, a one night deposit was charged to my debit card exactly a week after I made the reservation. I called 1-800-BeAStar a week later to change my reservation from HRH to RPR. The gentleman told me that they'd "probably" just apply my HRH deposit to my RPR reservation. Wrong. Several days later, I had a credit to my debit card for the HRH deposit. A deposit for RPR hasn't yet been charged. I haven't been too worried since I had received a reservation confirmation email from them the day I changed my reservations. However, after reading this thread I called 1-800-BeAStar to confirm my reservations and they had it. They even sent me another confirmation email. If I were you, I'd just give them a call to put your mind at ease.