Mine does just the same as your's, I have a 3Gcurve 9300 with 69mbs of memory.

I say 69MBs but with two browsing screens on of various sites etc the memory will devour itself down to 55 or 50MBs.

I now have almost nothing running on mine, no facebook on all the time, no antivirus running, nothing on the calender, nothing to run it down.

Ang x