Ubuntu 8.04 LTS aka Hardy is out and – surprise, surprise – ships with Firefox 3.0 Beta 5. A beta version in a final release???

Well,

there might be certain reasons to ship a beta version with the 8.04 release as mentioned in the release notes. Yet, most of my extensions giving me a browser that is supposed to be better yet fails in many aspects provided by these extensions.

So, back to Firefox 2.0 via:

  apt-get remove firefox-3.0
  apt-get install firefox-2

and – voila – all extensions are broken in firefox 2, too. After some search on the web, this seems to be an incomaptibility in the extensions.rdf file in your firefox profile between Firefox 2 and 3.

So, if you struggle with this problem, remove the extensions.rdf file in your firefox profile directory and restart firefox 2 should solve your problem.