Comment 27 for bug 182629

Installed ntop & htop, restarted laptop, when desktop loaded put in keyring pw then it happened for me
dmesg |tail said [ 125.209561] gksu[2709]: segfault at 4e7 ip 00007fa7ad992f29 sp 00007fff0833fca0 error 4 in libgdk-x11-2.0.so.0.2400.11[7fa7ad921000+ad000]

just reported here -
https://bugs.launchpad.net/ubuntu/+source/gksu/+bug/1041452