Comment 2 for bug 79093

vinboy : The reason is that ubuntu aims to bring package for a lot of architectures like AMD64, PowerPC, i386 and others. For that purpose, Ubuntu need to works with the source code. It's not possible to include a binary package into repositories because they all works with source code only. This is also important to use source code as any problem can be fixed within the code at any time.

But don't be afraid, azureus has been a very hard package to maintain, but it seems now that all serious problems are fixed with the latest release from ubuntu Gutsy backports.

I suggest you to install the Gutsy Backports version 2.5.0.4-1ubuntu3~gutsy1 which fix this problem.