We deployed Helmi's Windows Mobile 6 image to three of our test units in the office. Of those three, only one of them has had this problem. That particular device had not had any additional software installed on it since it was flashed with this ROM.

One of the two remaining devices is still in its default state, as well. It has not exhibited this problem, and HTC Home is being loaded at startup. I also know that this device is rarely charged, so it discharges and then cold boots on recharge frequently.

The third device has had multiple other programs installed on it, but I don't know what they are yet. This device has not experienced the hard reboot problem.

The stock radio firmware is in use on all but the second device (the one in the default state without the problem). It is using 1.41.