I am running the .76 OS and have the same problem. After a reboot my memory is close to 45 MB free. After a day or two it drops down. The low point for me seems to be hovering somewhere between 15 and 17 MB free.
I posted about this same memory leak issue on mine. I can get away with doing a battery pull every couple of days - it's really not that bad though I agree a fix is needed. Just yank it as soon as the phone starts acting up and it'll be good again for another couple of days or so.
Carrier: Verizon. (Exchange/BES Architect & Engineer since the very very beginning :)
Posts: 393
funny thing is that no one here every actually mentioned a "problem." seems like a bunch of people constantly checking their free memory limit for no other reason than just to check it. is this "low memory condition" actually causing problems?