Some really interesting things have happened with the release of Firefox 5.
For starters, it's brought to attention the fact that, with the new rapid development cycle, Mozilla will no longer provide any support for old versions - not even security patches. So after six weeks, if you want to stay safe online, you'd better upgrade to the latest version.
As independent home users this shouldn't be a problem, especially as Mozilla looks to make upgrades transparant. For enterprise IT departments, however, it may very well make it impossible to use Firefox. If you're not sure why, you should take a look at this post.
Mozilla's response? Who cares, more or less. Enterprises are such a small part of their user base, their time is better spent supporting home users and creating the best product for them.
This raised an interesting question here at LXF towers. Is technology adoption driven by the enterprise or the consumer?