Actually, before I did not. Now I have, as I was searching frantically for something mentioned here in the forum about a "power-off-mode set to 0 instead of 1 in order to remove spontaneous rebooting issues in ancient N900s. But I wasn't able to find it.

Nevertheless, while at it, I changed some of the things moderately that were slightly annoying before, and now the dimming and behaviour when the N900 is connected to the charger are more to my taste.

Maybe not the best way of going about troubleshooting (I should have left the stuff alone in order to find out what it really is that causes the spontaneous reboots, but can always revert to a saved copy of mce.ini).

I am thinking it could be a battery related topic, and am waiting for the replacement batteries I ordered last week.

And yes, I can dimly remember "config.sys"