I was doing a distribution upgrade from 10.10 to 11.04 and the update-manager got stuck at xulrunner. The update-manager was still responsive (e.g. scroll bars worked), so I killed the xulrunner postinst script with `kill`, which according to `ps` was where the upgrade was stuck. After that the upgrade appeared to continue fine, but as I was writing this I got an error about: "Could not install the upgrades
The upgrade has aborted. Your system could be in an unusable state. A recovery will run now (dpkg --configure -a)."
ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: xulrunner-1.9.2 1.9.2.28+build1+nobinonly-0ubuntu0.11.04.1
ProcVersionSignature: Ubuntu 2.6.35-32.68-generic 2.6.35.14
Uname: Linux 2.6.35-32-generic i686
Architecture: i386
Date: Tue Jul 17 01:11:07 2012
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 143
SourcePackage: xulrunner-1.9.2
Title: package xulrunner-1.9.2 1.9.2.28+build1+nobinonly-0ubuntu0.11.04.1 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 143
UpgradeStatus: Upgraded to natty on 2012-07-16 (0 days ago)
Actually, it looks like I did not kill the xulrunner postinst script directly, but rather the current command being run by the postinst script, which was
/usr/lib/
When I try to run this command manually, I get an error about a missing lib (error while loading shared libraries: libmozjs.so: cannot open shared object file: No such file or directory) , but it does not hang.
The update-manager tried to reinstall xulrunner, but I had the same problem.