Firefox 3 Beta 5 was suppose to be released last Thursday the 27th. However, on Sunday, March 23rd a major bug was discovered. Bug 424719: Firefox leaks nsDocument on http://www.freearcade.com/ when playing a game. Since the next developmental release after Beta 5 is suppose to Release Candidate 1 (which should not contain major bugs) there were faced with two options:

• Option #1: continue with the Beta 5 release as scheduled then fix this bug with a Beta 6 release.
• Option #2 : delay the Beta 5 release until this bug is fixed

I believe part of the reason they went with option #2 was because there would be no other reason (bugs, blockers, regressions, etc) for a Beta 6. No definitive date at this time when Beta 5 will be released. Currently the Upcoming Releases on Mozilla Wiki shows Week of March 31st. I’ll check the notes on Tuesday from the Firefox 3 status meeting and post any updates.