Thanks for your bugreport.
This problem should be fixed with the upload of apt 0.6.46.4ubuntu6.
Cheers,
Michael
** Changed in: apt (Ubuntu)
Assignee: (unassigned) => Michael Vogt
Status: Confirmed => Fix Released
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update-manager falls back to disttribution upgrade after python c
** Attachment added: "another crash dump"
http://librarian.launchpad.net/5482239/_usr_bin_python.1000.crash
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update-manager falls back to disttribution upgrade after python crashes in
apt-check, due to a segfault in pkgcache::VerIterator::Downloadable
https://launchpad.net/bugs/76530
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