Hrm. I just ran into the problem again. So, I fired it up again under Valgrind as per the directions above, and the problem goes away. Take away Valgrind, and it is back (somewhat randomly).
I am attaching a single log from Valgrind, though I don’t know if it will be helpful because it did not actually crash. ** Attachment added: "Gnome-terminal under Valgrind (but, no crash)" http://librarian.launchpad.net/6755207/valgrind.log.5762 -- [apport] GNOME Terminal Unicode SIGSEGV https://launchpad.net/bugs/89524 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs