New Thunderbird and Firefox
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In addition, there is now a new promotional website, spreadfirefox.com in beta release. Spread the word.
Upgrading both Firefox and Thunderbird from earlier releases went quite painlessly on my Mac OS X box. And now Thunderbird has a cool RSS reader so following my blog will be easier than ever ;-)
Updated 2004-09-15 18:48: The Firefox upgrade actually had some issues. It refused to open a browser window after the installation. Only deleting my profile using the Firefox Profile Manager helped.