What all do you have installed right now? All I have is:

Total Commander
Google Maps (GPS Disabled)
No Push Internet
No Curtains
Pocket RAR
C07 SenseUI 2.1 Trans Slider Mode9 Fix
Battery Monitor
Kyle Manila Fix (turn off that DAMNED flip on the clock)
PHM Registry editor

The only thing that should be sucking up memory is Google Maps and it's not using GPS but I can literally watch my battery meter go down in Battery Monitor.