Txdelta errors using the python bindings

Hi!

Using the python bindings to do commits, I'm seeing some weird errors
sending tx delta's while adding files. This error only appears to occur
when adding files over remote connections. A repository that I can do
those commits to fine over file:// breaks over svn+ssh:// or https://.

The easiest way to reproduce this bug is by adding an empty file to a
Google code repository using the attached script.

Any ideas as to what's going wrong here or perhaps something I'm doing
wrong in my script ?

Cheers,

Jelmer