i can't install app, help :(

[sapiiterbang]

hello

i've got problem when i tried to install azureus, i typed the command sudo apt-get install azureus
at the end, it says :
Errors were encountered while processing:
mixmaster
postfix
E: Sub-process /usr/bin/dpkg returned an error code (1)

how to fix the problem?
thanks b4

[gordintoronto]

Sounds like you should file a bug report about the packaging.

Is there some reason you can't use Transmission, which comes with Ubuntu?