Gal, recruited six years ago by former CTO and short-lived CEO Brendan Eich, brings continuity to the nonprofit organization's top techie job.
In a fiercely competitive marketplace, Mozilla gives up on its hope to release its overhauled browser this year.
Better performance is high on the list of improvements planned for Firefox 4. If all goes well, the new browser should emerge by November.
Direct2D support on Windows could be available in a preview release of the open-source browser under a proposed second-quarter goal.