Comment 4 for bug 767401

Although the symbolic link are probably causing a problem, it is probably not the cause of the crash. The log show a native stacktrace with the following bit in it :
/lib/libnss_wins.so.2(_nss_wins_gethostbyname2_r

This makes me think it might be the same issue as this bug :
https://bugs.launchpad.net/ubuntu/+source/samba/+bug/529714

Please try the work-around indicated in the bug : remove wins from the hosts line of your /etc/nsswitch.conf

The symlink problem might be this other bug :
https://bugs.launchpad.net/banshee/+bug/668481