Hey Folks,
This is true for both my netbook edition & standard ubuntu 10.10. Both are 64 bit.
I followed advice trying to get openshot to work:
http://ubuntuforums.org/showthread.php?t=1669606
http://ubuntuforums.org/showthread.php?t=1385688

Installed both ubuntu-restricted-extras as well as libavcodec-extra-52.

Instead of getting the error message about unknown lame & x264 encoders, I try to export to any format. I preferred when I had an error message to debug...now I just have a frozen program. It creates a placeholder file a couple KB large, but nothing else happens. I hit cancel after about 15 minutes when I decide it's not doing anything.