Stridey, I had been trying the alphas; I just tried a nightly. It still seems to have issues with text-boxes on certain pages. I tried writing a response in another forum in Camino and it was so painful that I closed it without even bothering to copy out the three-quarters of a sentence I had typed, and finished in Safari. 🙁
Oh, and in terms of unfinished, I am waiting for two things:
1) Spell-as-you-type, which is still on the 0.9 roadmap, and as far as I can tell not yet implemented
2) A fix for the above.
I know several people mentioned that the text-box thing is a known issue. Since you thought it was fixed already, any chance you have a link to a thread in their development area, so I can provide an example link of a page on which the textbox entry is still unusable? I would be more than happy to do that, to help them out just a tiny bit. 🙂