Just updated via update-manager and didn't experience a crash.
$ dpkg -l update-manager
ii update-manager 1:0.152.1
$ dpkg -l python
ii python 2.7.2-1ubuntu2
Although there're still pending packages. (attachement)
Also attached /usr/lib/python2.7/dist-packages/UpdateManager/UpdateManager.py
Just updated via update-manager and didn't experience a crash.
$ dpkg -l update-manager
ii update-manager 1:0.152.1
$ dpkg -l python
ii python 2.7.2-1ubuntu2
Although there're still pending packages. (attachement) python2. 7/dist- packages/ UpdateManager/ UpdateManager. py
Also attached /usr/lib/