The browser was supposed to be ready on 15 August. A second beta is now scheduled for 23 August.
Some of the browser bugs which programmers are still working on involve visual refresh, tab overflow, spell check and security features. Firefox 2.0 Beta 1 for developers is currently available for free download.
Bookmarks will now feature micro-summaries to provide a quick précis of frequently changing web pages, enabling users to see which pages have been updated.
Acton's warnings come as Facebook is embroiled in one of the biggest data scandals in history
The unmanned tanks could eventually be kitted with AI systems
Dubbed I-MacEtch, it will help meet demand for more powerful nano-tech
GPU firm's research unit for self-driving cars is growing