Do you have some packages installed from source on your system? For example some gstreamer 0.10 stuff? #33508 seems to be like the same error and was fixed by removing everything not installed from the dapper gstreamer packages...
Do you have some packages installed from source on your system? For example some gstreamer 0.10 stuff? #33508 seems to be like the same error and was fixed by removing everything not installed from the dapper gstreamer packages...