"Typical" memory left

[j joy j]

I have a 700w and always have about 5.5 mb of program memory left, sometimes way less. I recently had to travel through South Dakota and have major problems with my phone. Everyone else in the car that had Verizon still had signal but my phone completely froze up, couldn't use it at all, not even the camera.

I run:
WisBar Advance w/Vista look
Hidelogo
WP Pilot
Weather Panel
MemMaid
Tweaks2k2

In MemMaid I notice I have running programs like...
shell32.exe, clientshell.exe, repllog.exe, gwes.exe

Just wanted to see what kind of memory everyone else usually has left or if I should be doing something different. After having no use of my phone in almost the entire time in South Dakota, it got me wondering if I have something loaded that I shouldn't.

Thanks in advance for your input or help!