Trying to add a PPA that doesn't exist makes add-apt-repository print lots of errors and a backtrace. It should provide helpful information to the user instead, e.g. tell the user that the ppa doesn't seem to exist and to check if it's typed correctly.
ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: python-software-properties 0.81.10
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
CasperVersion: 1.287
Date: Thu Jan 5 13:20:47 2012
ExecutablePath: /usr/bin/add-apt-repository
InterpreterPath: /usr/bin/python2.7
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/add-apt-repository ppa:shnatsel/eidete
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
PythonArgs: ['/usr/bin/add-apt-repository', 'ppa:shnatsel/eidete']
SourcePackage: software-properties
Title: add-apt-repository crashed with HTTPError in http_error_default(): HTTP Error 404: Not Found
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.