Here is a semi-fix. This trick will prevent your phone from shutting down but will decrease battery life somewhat.
1. Download "Load Monitor" from the Android Market.
2. Once installed, open the Load Monitor app.
3. Click on the Menu Button and Select Preferences.
4. Check the following Items:
* Add Notification
* Auto Start
* Wake Lock
* Only screen on
5. Go to "Update interval" and select 5 Minutes.
6. Although the Auto-start assures the app runs everytime you reboot your phone, if it ever shuts off, start the app manually; though you should haven't to do this step too many times.
Load Monitor keeps your phone from shutting down by preventing suspend via wake lock setting and by actively monitoring your load, the phone is always doing something. The main reason these phones shut-off is due to the processor going into suspended mode whenever it is not being used much and then it shuts off once it hasn't been used long enough. This trick worked for me, can't guarantee for everyone but a very good chance it will work.
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