I customized the ROM a bit and threw out some ringtones and some app-installers. System size is now 166 MB and superuser indeed works. So it was the partition size after all. Thanks for the tip! However, now lots of other apps quit unexpectedly, most frustratingly google mail. Any ideas on that? Cache clearing does not help :-/
If you have unexpected fc on some app. If I will you on your place. I will do try check all bad blocks on cLK. There's a clear graph of it.
I have some in recovery. So maybe it is the main problem.
Sorry for my English, mate.
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