The valgrind log doesn't point any problem. Do you get that crash every time you start the capplet?
** Changed in: control-center (Ubuntu) Status: Needs Info => Unconfirmed -- [apport] gnome-display-properties crashed with SIGSEGV https://launchpad.net/bugs/85929 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs