I'm forced to use TB 17 instead of the stable branch due to some bugs. I just downloaded and unpacked a tar from the Mozilla site. So far so good. But what if I want to have the thunderbird-gnome-support (eg. indicator-messages integration) for that version of TB in Raring?
When I try to download an old .deb file with the gnome support and install it, it (of course) yells about missing dependencies on TB 17, which is not registered with dpkg.