I've tried, I've really tried to like FF3, but I don't. In its Linux version it's much slower and less responsive than FF2. It just doesn't feel nice to use. Thinking I might be kidding myself I've gone back to FF2, and immediately browsing feels good again. Apart from this, there are some cosmetic aspects to FF3 which I don't like. I'm going to stick with FF2 as long as I can, and I'll probably have another look at alternatives such as Opera.