Generally, bugs in Ubuntu should be filed in Ubuntu (which you have done, thanks!) and then forwarded only once (a) we're confident it's a real upstream bug and (b) we have a good set of debugging information - some of which is going to be Ubuntu-specific, like what changed between alpha 3 and beta 2.
Generally, bugs in Ubuntu should be filed in Ubuntu (which you have done, thanks!) and then forwarded only once (a) we're confident it's a real upstream bug and (b) we have a good set of debugging information - some of which is going to be Ubuntu-specific, like what changed between alpha 3 and beta 2.
I'll comment further on the upstream bug.