BB Bold 9700 :: How To Improve Memory Management?

I have the Bold 9700 coming from many years of using Palm OS devices.I am running OS 5.0.0.344 I am an Anesthesiologist and use my device for communication but also to keep track of my scheduling and billable activiities. have very few extra app's loaded but consistently run free memory in the 5- 10 MB range. I do notice things slowing down as the free memory drops but no lockups as a rule. My only third party apps are Pocket Informant for scheduling, Epocrates for Pharmaceutical info and HanDBase for BB to keep track of my Billings and professional activities (This works but MUCH slower & is relatively crippled compared to HanDBase on my old Treo 680 but that is another story)I deleted all the games and any unnecessary apps but still have pretty marginal memory. I have also loaded Memory Booster which does not affect these values but may improve performance.I would love to delete all those PNG images loaded with the device but have not been able to find any reliable info on how to do this under OS5.Do I have some sort of memory leaks? Are there any other ways that I could find out which apps are eating up the memory?Any other suggestions that would improve this situation?It baffles me to read of people complaining about not enough apps for the BB when I can barely run what I currently have loaded. (Interestingly, I was able to run all these apps on my old Palm Treo with it's massive 32MB RAM - I know it didn't have to run all that Java wizardry & it was not nearly as good a phone but it is ironic that BB's latest & greatest should be so marginal in its performance)Any suggestions or advice gratefully received.