Mozilla is close to shipping the final version of Firefox 4, and has one further beta to publish before the full code is released.
Damon Sicore, senior director of platform engineering at Mozilla, congratulated the coders for their work, and said that there are just 160 hard blockers left in the application.
Previous builds have taken six weeks to see a release candidate once 100 blockers are left.
"We must ship the best possible product. Do not be timid. This is your product. We need you to own it," he said in a blog post to staff.
"I know you're all tired and stressed. You all do incredible work every day, and you've built an amazing product. Stay focused. Be nice to each other. Firefox 4 is gonna kick ass, and you should be fiercely proud of it."
Mozilla has been releasing advanced Firefox 4 beta versions for some time, and the new browser was to have shipped last year. Mozilla delayed the launch in line with a long-standing policy not to ship until all flaws have been fixed.
Firefox is now Europe's most popular browser, but it and Internet Explorer are facing increasing competition from Google's Chrome.
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