I tested, the hiding of the "Other..." option in the "Download from:" drop down box, by editing Ubuntu.info and removing the line "MirrorsFile-amd64: Ubuntu.mirrors". With the chnages, when I ran software-properties-gtk I no longer saw an "Other..." option and so the choose download server dialog never appeared.
** Changed in: software-properties (Ubuntu Wily) Status: New => Triaged ** Changed in: software-properties (Ubuntu Wily) Importance: Undecided => Medium ** Changed in: software-properties (Ubuntu Xenial) Status: New => Triaged ** Changed in: software-properties (Ubuntu Xenial) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to software-properties in Ubuntu. https://bugs.launchpad.net/bugs/1101881 Title: software-properties-gtk crashed with TypeError in __new__(): object of type 'NoneType' has no len() Status in software-properties package in Ubuntu: Triaged Status in software-properties source package in Wily: Triaged Status in software-properties source package in Xenial: Triaged Bug description: on nexus 7 ProblemType: Crash DistroRelease: Ubuntu 13.04 Package: software-properties-gtk 0.92.13 Uname: Linux 3.1.10-8-nexus7 armv7l ApportVersion: 2.8-0ubuntu2 Architecture: armhf CrashCounter: 1 Date: Sat Jan 19 14:44:31 2013 ExecutablePath: /usr/bin/software-properties-gtk InstallationDate: Installed on 2013-01-16 (3 days ago) InstallationMedia: Ubuntu Raring Ringtail (development branch) - armhf (20130115-15:18) InterpreterPath: /usr/bin/python3.3 MarkForUpload: True PackageArchitecture: all ProcCmdline: /usr/bin/python3 /usr/bin/software-properties-gtk --open-tab 2 ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash PythonArgs: ['/usr/bin/software-properties-gtk', '--open-tab', '2'] SourcePackage: software-properties Title: software-properties-gtk crashed with TypeError in __new__(): object of type 'NoneType' has no len() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1101881/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp