When you experience a crash or power outage, Firefox can now resurrect all the tabs you had open when the problem occurred, saving you time and aggravation.

Something perhaps not as good is the addition of the "X" Close button to every tab you open in Firefox 2.0. For power tab users, those buttons take up space, shrinking the tab labels so they're harder to read as you open more tabs. The issue is basic: How does one close a tab? Mozilla has added an about:config setting (browser.tabs.closeButtons) in Firefox 2.0 that gives you four options (0-3, with 1 being the default). The 0 option of this setting displays the Close button only on the active tab. That's a pretty good compromise, but when there's only one tab open, the X button doesn't appear. The existing Beta 1 default may make the most sense, but there are two recommendations Mozilla should consider including these:

1. Expose these X button options in the user interface on the Tabs page of the Options dialog instead of burying them in about:config.