The Java Terminal test isn't everything. I tried it and got normal results, but Safari still crashed on me this evening. I've got 10.4 on order, however. Amazon has a smokin' deal on the family pack: 5 licenses for $150 (after rebate).
Sure it does. Back and Forward are under the History Menu choice. Reload is under the View Menu. You can also click and hold the Back and Forward buttons. It also has a neat feature called "Snapback" that allows you to mark a page and return to it repeatedly, no matter how far down a link tree you might go. The Google search bar does it automatically for the search results when you click on any particular result link, but you can mark a any page for "shapback" by selecting "Mark for Snapback" under the History Menu.