Steam doesn't start

The first time i started Steam it was updating the Steam client, but
after the update, Steam didn’t start anymore.

I also tried the fix described in here:

That’s the output of Steam in Konsole:

Any ideas?

The tar archive containing the steam runtime seems to be broken. Search for steam-runtime.tar.xz in ~/.steam and it subfolders and delete that. You can also try deleting the whole .steam folder though that would remove your installed games and settings (if there are any)

Thanks for your fast reply.

I just deleted the steam-runtime.tar.xz file in .steam/ubuntu12_32/ and now
Steam is running as it should.

Thank you very much leszek!