Comment 2 for bug 426844

I tried in karmic:

$ sudo aptitude install mythstream
...
The following packages are BROKEN:
  mythtv-frontend
The following NEW packages will be installed:
  libqt3-mt{a} mythstream
0 packages upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 450kB/3732kB of archives. After unpacking 9847kB will be used.
The following packages have unmet dependencies:
  mythtv-frontend: Conflicts: mythstream (< 0.21.0) but 0.18.1-0ubuntu8 is to be installed.

mythstream depends mythtv, but 0.22 is in karmic

Please upgrade mythstream to 0.22, or remove it from the repository.