stupid phone
My phone would soft reset everytime I had new voicemail. I troubleshooted this for 20 minutes. After uninstalling, reinstalling, hard resetting, restoring, I finally figured out that my mp3 ringtone manager was causing it. The fix was to set the voicemail sound to "no sound."
Really stupid and dumb, mostly due to the fact that the Palm OS5 uses a software layer and is not written to natively support the processor. My phone is stable again at least. However Windows Mobile 5 is really tempting.