GPA13, GPA14, and now GPA15 still has issues where corporate exchange e-mail will stop synching after about a 24-hour period.
I can't say for certain yet, but compared to GPA14 the amount of time that passes before it will start refusing to sync has improved. On GPA14 I could usually get about 18 hours in before I had to reboot, and now I've gotten anywhere from 24 - 36 hours between reboots. This might be more than just an e-mail thing though. Gmail also seems to stop synching, and in fact, I don't think I'm able to receive text messages or phone calls either. It's like all voice and data services run out of juice, or piss the kernel off enough to boot the services out of memory.
So far there are only two ways to get it to start synching again: 1 is the reboot, 2nd is to delete the account and re-add it. One way or another the e-mail service needs to restart. Any thoughts anyone?