Browser works. If I start moving the cursor and clicking too fast, it will freeze. I set it down and it sorts itself out in a few minutes in most cases.
It's been more useful than I expected. I loaded a number of mobile web sites into the bookmarks. For example, pages like this:
http://m.wund.com/cgi-bin/findweathe...le&query=44325
Kindle 3 delivers this no problem.