Comment 2 for bug 870719

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. I'm also sorry to hear that you encountered problems while upgrading.

It seems that the bug you have reported was caused by a local problem which might have been caused by previously installed packages on the system. A related workaround is described here:
http://hostechs.com/2008/10/ubuntudebian-apt-get-subprocess-pre-installation-script-returned-error-exit-status-1/

Because of this, I will now close the bug report. If you still consider this to be a bug in Transmission, you are welcome to comment here.