Hmm, I still have issues. S2E is working now. As far as I see, the Crashes happen if a lot of memory is in use. (For Example, it crashed after starting Ingress) I can't provide a reproduceable procedure right now, but my guess is that it has something to do with high memory usage.
I forgot to mention that, as it's already naturally to me to do a full wipe prior installing a ROM.
However I think i made a mistake configuring S2E. I'll report back.
As far as I know there is some sort of automatic taskkiller included in this ROM, right? I'll check this...