Mozilla released Firefox 3.5 Preview, also known as Firefox 3.5b99, a couple days ago as a sneak peak at the upcoming release candidate. If you are running Beta 4, you can get it by checking for updates.
While most things seem to work just fine, the WordPress admin interface has somehow been broken by this new release, at least for version 2.7.x. It is still somewhat usable, but AJAX and other JavaScript related features seem to not work. Of course, the admin interface is heavy with such features, rendering many tasks very difficult.
If you are a Firefox user, you may want to hold off on upgrading to 3.5 Preview if you run WordPress sites. Or, this might be a great time to try out other browsers like Chrome or Opera for a while.
UPDATE 2009/06/11: WordPress 2.8 was released yesterday and this new version works well with Firefox 3.5 Preview. It also provides a lot of snazzy cool new features. Check it out if you can upgrade.
[…] Google了一下，发现一篇名为Firefox 3.5 Preview Released, Breaks WordPress Admin Interface的文章描述了和我遇到的一样的问题。我看了Firefox的版本库，从FIREFOX_3_5b4_RELEASE的tag到FIREFOX_3_5b99_RELEASE中间有UPDATE_PACKAGING_R8、FIREFOX_3_5b99_BUILD1、FIREFOX_3_5b99_BUILD2 3个tag，总计大约80个变更，因为对Firefox的代码不是很熟所以也没法判断出是哪个变更导致了这个问题。 […]