As a follow up to the post yesterday about Debian Linux and Commvault Simpana 9 startup as found here. Ubuntu Linux is also going to have the same issue. Since Ubuntu is based on Debian, it too has a runlevel 2 by default. I installed Ubuntu 11.10 and out of the box it was on runlevel 2. The same workaround I provided on the Debian post would be applicable here too.
Ubuntu 11.10 is not affected, as the installer detects the runlevel 2 correctly and sets the correct symlinks to the init scripts so that startup of Ubuntu will see the services start up fine.