sudo apt-cache showpkg xulrunner | less
This command will give you version and other relevant information about a package installed on Ubuntu.
I started back on a CakePHP intranet application that I haven’t worked on in a while. I received a ‘Missing Database Table’ error when I viewed the application in a browser. The table that was mentioned in the error had been deleted a few months ago and I no longer had a model, view or controller for this table. After a few hours of investigating, I found that I had to delete the cache files (app/tmp/cache) that were created when I initially baked this table.