I recently downloaded and installed the new Ubuntu Modifications, by upgrading xul-ext-ubufox to 3.4-0ubuntu0.14.04.1.
I can confirm that the package did upgrade to the latest version:
$ apt-cache policy xul-ext-ubufox
xul-ext-ubufox:
Installed: 3.4-0ubuntu0.14.04.1
Candidate: 3.4-0ubuntu0.14.04.1
Version table:
*** 3.4-0ubuntu0.14.04.1 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
100 /var/lib/dpkg/status
2.8-0ubuntu1 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
500 http://cz.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
When I opened Firefox 54 (I have not upgraded to 55 yet), I saw that the Ubuntu Modifications are still at 3.2 rather than 3.4:
It gets weirder because I also have Firefox 52 ESR installed, and the Ubuntu Modifications in that one did update correctly:
So now, I cannot figure out how to get Ubuntu Modifications to update in my Fx 54 installation. Does anyone know how to do this? (Or why they updated in one and not the other?)
When I create a new profile in Firefox 54, that new profile has the correct ubufox version. Old profiles also have correct version of Ubuntu Modifications. It is only the file I was using at the time I did the updates that remains stubbornly at version 3.2
At the time I performed the upgrade with Software Updater, I had Ubuntu Modifications disabled in Fx 54 and enabled in Fx 52 ESR. I do not know whether this matters.
I already tried removing the package (with Synaptic) and reinstalling it while Ubuntu Mods was active in Fx 54. No change. I also did sudo apt-get install --purge --reinstall xul-ext-ubufox. No change. Version 3.2 is still in Fx 54, and it is still disabling multiprocessing (no e10s). I would like to upgrade Ubuntu Modifications to version 3.4 because it is a security fix.
In case it is of any use, here is where I could find ubufox in my system:
$ locate ubufox
/usr/share/app-install/desktop/xul-ext-ubufox.desktop
/usr/share/app-install/icons/ubufox.svg
/usr/share/doc/xul-ext-ubufox
/usr/share/doc/xul-ext-ubufox/changelog.Debian.gz
/usr/share/doc/xul-ext-ubufox/copyright
/usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/ubufox@ubuntu.com.xpi
/var/cache/apt/archives/xul-ext-ubufox_3.4-0ubuntu0.14.04.1_all.deb
/var/lib/dpkg/info/xul-ext-ubufox.list
/var/lib/dpkg/info/xul-ext-ubufox.md5sums
/var/lib/dpkg/info/xul-ext-ubufox.postinst
/var/lib/dpkg/info/xul-ext-ubufox.postrm
/var/lib/dpkg/info/xul-ext-ubufox.preinst
/var/lib/dpkg/info/xul-ext-ubufox.prerm
