With the release of Firefox 3.0a2/Gecko 1.9a2 earlier this week, there has been a common question, “So what new features come with this milestone? ” The short answer: not much. The long answer is best summed up by Percy from Mozilla Links: “The Mozilla project has released the second alpha of Gran Paradiso. Like Alpha 1 it is not much about Firefox but a testing vehicle for a large number of changes to the underlying Gecko rendering engine. Some important changes have occurred that affect the rendering of partially downloaded content (XML and web pages as well) and the calculation…

Over on Go Firefox!, an interesting question was posted: Which uses less system resources (memory)? My theory is using tabs would use less resources then having the same sites opened in separate windows. My reasoning is each window has to load the entire browser interface, not just the page content. So, I did a little experiment. First using Firefox 2.0.0.1 with a clean profile (no extensions, no plug-ins and default theme) and imported my bookmarks from another profile. For the first test, I opened Firefox with the clean profile and choose 5 sites and opened each one in its own…