I have this problem too. I think the problem is from the mo file or some unicode problem.
And a guy uses gdb to trace this Segmentation fault, the result is the following. Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1491953984 (LWP 1732)] 0xa7d94466 in pthread_spin_lock () from /lib/tls/libpthread.so.0 (gdb) bt #0 0xa7d94466 in pthread_spin_lock () from /lib/tls/libpthread.so.0 #1 0×9fa8db79 in NP_Shutdown () from /usr/lib/flashplugin-nonfree/libflashplayer.so #2 0×9f9fd0c8 in NP_Shutdown () from /usr/lib/flashplugin-nonfree/libflashplayer.so #3 0×9f9f8368 in NP_Shutdown () from /usr/lib/flashplugin-nonfree/libflashplayer.so #4 0×9f9f1211 in ?? () from /usr/lib/flashplugin-nonfree/libflashplayer.so #5 0×9f9f58f7 in ?? () from /usr/lib/flashplugin-nonfree/libflashplayer.so #6 0×09265014 in ?? () #7 0xafa42778 in ?? () #8 0×00000000 in ?? () -- flashplugin-nonfree 9.0.21.78.2 https://launchpad.net/bugs/74738 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs