I currently am using Mozilla 1.6 as my primary browser. My main complaints are problems with resovling URL's and some major gaffes while trying to render a page. I am starting to lose patience with Mozilla 1.6 doing odd things when I click an item in the Bookmark Manager, and Mozilla responds with an error message. The other bothersome feature is when I try to preview one of my blogs, and partway down the page, I get garbage characters to the bottom. I'm sure that the characters are not random.
Since there is a Mozilla 1.7, perhaps upgrading will help. I'm still not prepared to go back to IE6 as my browser, so my only recourse seems to be to move forward to the newest release.
User Friendly the Comic Strip - The Daily Static periodically would promote Mozilla, talking about how great it was, but they must not have been using it in the same environment as I am, as I started to see anomolies from the first day.