Comment 57 for bug 63996

Without the patch, there is another workaround:

Since istanbul saves the recorded file to /tmp (with a random filename) after the recording session (even with sound and 3D turned-on), just go to /tmp and rename your file (it is already encoded as .ogv)

It appears that only the file-save dialog is improperly displayed (or not at all), but everything else works fine. I've tested it multiple times on Karmic (2.6.31-17-generic) running the default repository version (patched and unpatched). The quality is better than gtk-recordMyDesktop, especially a/v sync.