I have verified that this bug is fixed in software-center version 4.0.5 in natty-proposed. Many thanks!
** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to software-center in Ubuntu. https://bugs.launchpad.net/bugs/802919 Title: Install menu is enabled while disconnected Status in “software-center” package in Ubuntu: Fix Released Status in “software-center” source package in Natty: Fix Committed Bug description: TEST CASE: 1. Disconnect the system from the network 2. Select an application that is not installed on the system 3. Select the menu 'File / Install' Result: S-C tries to install the application but fails --- Ubuntu Bug Squad volunteer triager http://wiki.ubuntu.com/BugSquad ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: software-center 4.1.6 ProcVersionSignature: Ubuntu 3.0-2.3-generic 3.0.0-rc4 Uname: Linux 3.0-2-generic i686 Architecture: i386 Date: Tue Jun 28 12:42:48 2011 EcryptfsInUse: Yes PackageArchitecture: all ProcEnviron: LANGUAGE=en_US:en PATH=(custom, user) LANG=en_US.utf8 LC_MESSAGES=en_US.utf8 SHELL=/bin/bash SourcePackage: software-center UpgradeStatus: Upgraded to oneiric on 2011-06-27 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/802919/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

