[Gambas-user] Issue 206 in gambas: Can't compile Gambas3

[gambas at ...2524...]

Comment #4 on issue 206 by john.aaron.rose at ...626...: Can't compile Gambas3
http://code.google.com/p/gambas/issues/detail?id=206

Sorry about that: I didn't notice the link. Just ran the apt-get. Got:
The following packages have unmet dependencies.
   libsdl-mixer1.2-dev: Depends: libvorbis-dev but it is not going to be  
installed
   libsdl-sound1.2-dev: Depends: libvorbis-dev but it is not going to be  
installed
E: Broken packages

All these 3 packages (including libvorbis-dev) are in the Ubuntu  
repositories. When I try libvorbis-dev, I get:
ibvorbis-dev:
   Depends: libvorbis0a (=1.2.3-3ubuntu1) but 1.3.1-1ubuntu1~ppa1~lucid1 is  
to be installed
   Depends: libvorbisenc2 (=1.2.3-3ubuntu1) but 1.3.1-1ubuntu1~ppa1~lucid1  
is to be installed
   Depends: libvorbisfile3 (=1.2.3-3ubuntu1) but 1.3.1-1ubuntu1~ppa1~lucid1  
is to be installed

I can't work out which ppa it doesn't like.