Firefox 3.6.4, which saw a seventh release candidate this week, had potential to ship today, but due to some necessary crash analysis, the release may get pushed into next week.

As reported at the product planning meeting yesterday, an investigation into crash statistic irregularities is causing Mozilla to re-evaluate if they should ship Firefox 3.6.4. Analysis of the data is taking place now and anyone can follow along live using Mozilla’s Etherpad installation.

Several other releases have been delayed due to Firefox 3.6.4 including Firefox 3.5.10, Thunderbird 3.0.5, and Thunderbird 3.1, though the Thunderbird team may choose to ship without a final Firefox 3.6.4 release.

Update: Firefox 3.6.4 has indeed been delayed until next week. Thunderbird 3.0.5, however, will ship today or tomorrow.