That's probably because you are using a relese of Ubuntu that is now End of Life see http://wiki.ubuntu.com/Releases for support status information about Ubuntu releases.
** Package changed: ubuntu-release-upgrader (Ubuntu) => firefox (Ubuntu) ** Changed in: firefox (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1412894 Title: firefox will not update Status in firefox package in Ubuntu: Invalid Bug description: i keep getting a message stating i ma using an old version of firefox ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: ubuntu-release-upgrader-core 1:0.205.7 [origin: unknown] ProcVersionSignature: Ubuntu 3.11.0-26.45-generic 3.11.10.12 Uname: Linux 3.11.0-26-generic i686 ApportVersion: 2.12.5-0ubuntu2.2 Architecture: i386 CrashDB: ubuntu Date: Tue Jan 20 12:13:49 2015 InstallationDate: Installed on 2015-01-11 (8 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1) MarkForUpload: True PackageArchitecture: all ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to saucy on 2015-01-20 (0 days ago) VarLogDistupgradeAptlog: Log time: 2015-01-20 10:13:19.786040 Log time: 2015-01-20 10:13:39.923312 Log time: 2015-01-20 11:50:30.661943 Log time: 2015-01-20 12:13:49.296490 VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1412894/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp