Hi!
I have the same problem. However a new firmware v4.0 is promised in time for easter (although it was first announced to become available in January). If you have the 3.99 firmware, you have a hardware revision 4.0 aquaero, wich was released with this stiched-together, intermediate firmware, wich seems to have a lot of bugs.
My own system is scattered around my living room atm, waiting for the new firmware, as I had to take it halfway apart to get at the aquaero. >