Enable GNOME Support in Firefox 3.5 with Ubuntu 9.04

Ubuntu 9.04 ships with Firefox 2 as the default Web browser. You can install Firefox 3.5 (aka Shiretoko) through the Applications menu if you want. However, Firefox 3.5 breaks compatibility with the default Firefox 2 application handler. If you click on a package installation link and get a message that looks something like

Firefox doesn't know how to open this address, because the protocol (apt) isn't associated with any program.

Then what you should do is open the terminal and type

sudo apt-get install firefox-3.5-gnome-support

This will install the necessary package. You'll need to restart Firefox 3.5 to see the changes.

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