I’m having the same problem with the insert/edit link popup – in the latest Safari, FireFox for Windows, and Firefox Beta 5 for Mac. I’ve tried emptying the cache, which some other folks have said fixed it, but no luck – when I click “insert” it simply clears the form.
We’re probably going to rip it out and use 2.3.3 for this project; it’s going to be a group blog and some bloggers will not be comfortable working with HTML (I am, but that’s me) and this is such a basic feature that it’s a show stopper for us.
Very frustrating. Anybody found a reliable fix?