[theedon]

Well, this doesn't fix the problem but it helps... This CAB will disable the power buttons "Long Press Power OFF". This will at least prevent the accidental reboot while typing an email. It can be easily undone by uninstalling it.

All it does is overwrite \Windows\PowerOffWarning.exe with a program that does nothing...

NOTE: (Standard disclaimer) Use at your own risk...

NOTE2: You can't delete ROM files but they can be overwritten. This means that when the program is uninstalled the original ROM file reemerges and continues to operate as originally intended. The only way to get rid of a ROM file is to reburn your ROM without the file...