Hmm, I just upgraded the version of Safari on my computer to 3.1 and I seem to be able to type entries just fine with it. I normally use Flock, a derivative of Mozilla when I am blogging, so my problem with typing entries using the web UI must be related to Flock and perhaps Firefox.
At least that narrows it down for me and will make it easier to figure out what the problem is.
It's not that I don't like using an offline editor, I do. The big problem is that Windows Live Writer is buggy with the way it handles javascript and it seems to be the best I have found so far to work with. Zoundry has a beta version that may be out, I may head over and try it out. I used to use Zoundry blog writer but WLW seems to do a lot more, which is why I switched.

9
