I recently ran into the same Problem as Louis Kuan
The fix from Lewis Goddard actually helped to get me connected again, thank you for that. Since i have to few reputation i am not allowed to comment on the Answer so I am forced to ask this way (sry for that):
Is there already any information about who exactly is affected by this mal update?
what exactly are the 3 mentioned packages:
I noticed, that my internet connection is a bit slower, than before the fix.
Since i had to comment out certain lines in the /etc/apt/sources.list file, i wont be getting any other updates from those sources as well, right? So when can I expect an official update, that fixes this problem for good?