Aha.. yes I have installed stuff from Extras Devel but that was ages ago and I haven't done anything for a while since before that.

So if all else fails I backup, reflash, and reinstall without touching Extras Devel, I guess is what you're saying.

I did try the latest CSSU now and that has actually helped, so far... no more of these crashes, and the device is more responsive to boot (good work CSSU people). But we will see if this is really the last of these errors, it's too early to say.. and a somewhat risky strategy I guess.