Are you running a theme? I get the leak as well when running BBOS V2 theme, but it is normal and to be expected. Without theme, memory is stable.
Either way Lyricidal V6.6 is super fast!!!!!
Have changed the radio to 164 Platform 200 and the improvements are huge.
Constant 43 mb of memory and battery use is great. Seems to hunt far less under conditions of low signal which I have at my home.
Thought you people out there would be interested as I have not seen this done in the threads!