Just had to reboot my computer because the entire system froze up. All because I tried setting a layer to Lighten in gimp...
@Zauberin Whoa! With adequate spoonage, it'd be interesting to try diagnosing just what was responsible for that. =:P

@porsupah I'm guessing it was memory leak coinciding with an infinite loop, or something. No repro when I tried setting it again, though.

The file in question is 2100x1275px, with 12 layers. Shouldn't be enough to trigger that kind of runaway leak though, GIMP doesn't even use half a gig of memory with that file loaded.

@Zauberin Oogh, lack of reproducibility's a pain. That's getting into the realms of race condition fun. ^_^; Should be fine - I know I've loaded very large images pushing the bounds of some formats' dimensions, and GnuIMP's been fine with it.

Gremlins. Def'nitely gremlins.

@porsupah Well, it happened again. I think what's triggering the issue is changing the layer blending too frequently. In my case, I'm changing it once a second or faster by running my mouse's scroll wheel over the selector.

@porsupah When it first happened, gimp froze for like 10-20 seconds, but then the whole system froze after that. The second time, when the freeze started the whole system froze up almost immediately.

Maybe because that image now has 4 additional layers >.>

@Zauberin But how is a simple process having such profound effects? Kernel level drivers, that's understandable, but not forgivable. The system should *never* fail without actual failure preventing operation, and even then, mitigation should come into effect.
@porsupah I suspect hardware. Either [A] my motherboard is a lemon or [B] my CPU is at fault because its architecturally *weird*