From P2PNet: Mozilla’s Firefox 3 Beta 5 developer preview release is now available for testing.
It includes more than 750 changes from the previous beta, improving stability and web compatibility, providing platform and user interface enhancements, “resulting in the fastest Firefox ever”.
“Compared to Firefox 2, web applications like Google Mail and Zoho Office run twice as fast in Firefox 3 Beta 5,” it says.
Memory usage: “Several new technologies work together to reduce the amount of memory used by Firefox 3 over a web browsing session. Memory cycles are broken and collected by an automated cycle collector, a new memory allocator reduces fragmentation, hundreds of leaks have been fixed, and caching strategies have been tuned.”
Reliability: “A user’s bookmarks, history, cookies, and preferences are now stored in a transactionally secure database format which will prevent data loss even if their system crashes.”
But, Mozilla warns, “Firefox 3 Beta 5 will overwrite your existing installation of Firefox on Mac OS X and Linux.” On Windows, it installs in a new folder.
“For all systems, you won’t lose any of your bookmarks or browsing history, but some of your extensions and other add-ons might not work until updates for them are made available,” adds the post.