There seems to be a programming error in aptdaemon, the software that allows you to install/remove software and to perform other package management related tasks. Please report this error at http://launchpad.net/aptdaemon/+filebug and retry.

[FuzyToes]

I uninstalled KTorrent and it was ok. then, i uninstalled it with all due care, then I tried to re-install it for just a test. The reinstallation hung so after an houer I rebooted. After that. the synaptic installer tells me to *bleep* :)

More:
houe
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 768, in simulate
    return self._simulate_helper(trans, status_path)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 936, in _simulate_helper
    return depends, status, self._cache.required_download, \
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 218, in required_download
    pm.get_archives(fetcher, self._list, self._records)
SystemError: E:I wasn't able to locate file for the libktorrent2 package. This might mean you need to manually fix this package.

Basically, I think my Ubuntu software center is hurt and so is the rest. I just reinstalled UBUNTU. Please don't make me reinstall it again?