Last night I ended up wiping my Treo 650 and reinstalling all my software. I have been having issues with it rebooting every time I tried to sync my mail using Snappermail. That program is half the reason I use my Treo over the Blackberry, so I was not too happy when it started acting up earlier this week. I had to go on my trip Thursday without being able to use the Treo for email. I got by on the Razr and the Blackberry but I like the Treo better. After the reinstall Snappermail seems to be working. But I have had 2 random reboots since the hard reset. Once after a call to my sister right after I got out of the subway this morning. The other when I was syncing with my Powerbook. The sync reboot also happened often before I wiped the Treo, but I am not sure if it is because of the config on my Powerbook or the Treo.
I will try using for a while longer, but if the random reboots continue I will have to seriously consider an alternate PDA phone. As much as I like this device, I cannot have it randomly rebooting on me almost daily!