DM15L hangs

[emece67]

Hi all,

After a few days playing with my 15L, I've found that it hangs in some unpredictable way.

The symptoms are that it freezes and no longer responds to any keyboard input. It happens when using the keyboard (in the last 3 times it hanged, I was entering a number -two times- and the other recalling the elements in a matrix). It only recovers after pressing the reset button in the back.

I've also noticed that the, say, 5 or 6 times it hanged, it was running at 12 MHz. It has not hanged, for now, when running at 48 MHz.

Does anybody suffered from this?

Regards.