We took one more important change into the builds last night, moving from a blacklist to a whitelist for external protocol handlers, so today's builds are the new candidate 1.0PR builds. If all goes well with these builds, they'll become the official Firefox 1.0 Preview Release builds on Tuesday morning. Please help us test these bits and if you find any major regressions, please file bugs and nominate those as PR blockers with the bug flag "blocking-aviary1.0PR?" so that the Aviary team will see.