Comment # 4 on bug 909248 from Wolfgang Rosenauer

(In reply to Ulrich Windl from comment #3)
> > One of the most common crash reasons just to play some lottery:
> > Do you have tracker-miner-firefox installed?
> 
> That name rings a bell, but I think SuSE once installed it, so maybe SuSE
> should take care of removing it if it causes crashes.
> 
> From the terminal output of "-safe-mode" I captured this:
> 1418215746983	addons.update-checker	WARN	Update manifest for
> susefox@opensuse.org did not contain an updates property
> 1418215747135	addons.update-checker	WARN	Update manifest for
> trackerfox@bustany.org did not contain an updates property
> 1418215747921	addons.update-checker	WARN	Update manifest for
> {972ce4c6-7e08-4474-a285-3208198ce6fd} did not contain an updates property

So I guess I was right :-( (again)
Please remove that package manually for now and verify if everything works
again.
If so, please mark this bug duplicate to bug 908892 and I'll check with the
tracker maintainers what to do about it.