In all, over 200 updates have been integrated, and updated installation
media has been provided so that fewer updates will need to be downloaded
after installation. These include security updates and corrections for
other high-impact bugs, with a focus on maintaining stability and
compatibility with Ubuntu 8.04 LTS. — Release Notes

This one has Firefox 3.0 Final, bunch of intel driver fixes, and sudo will work even if your hostname is messed up.

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