Look how old this is! I post at SearchCommander.com now, and this post was published 19 years 2 months 7 days ago. This industry changes FAST, so blindly following the advice here *may not* be a good idea! If you're at all unsure, feel free to hit me up on Twitter and ask.
I’m about to get ANOTHER replacement treo. This one reboots every time I press a letter key to forward an e-mail or address a new one. what a weird pain in the neck. I can reply just fine, but if I try to forward, and manually enter the address, forget it – reboot. I can use my contacts list to forward or send new mail just fine, but it’s the act of pressing the letter button that causes a reboot!
***resolution***
Hard reset, losing all data. But it was backed up.
How to reboot or reset Palm Treo
I have the exact same problem.
My theory is that it has to do with the lookup of existing names within your contact list. If I put the address in the subject like and then cut and paste it into the TO: line (and then put in the real subject) it works fine.
Still seeking a resolution. I am going to empty my contacts later today to narrow the problem..