At the time, the engineer said there was "significant negative feedback," but it appears that has been revised as Mozilla is re-instating the builds.
A new post, called 'Update on turning off 64-bit Windows builds,' the engineer said the builds are back due to the limitations of 32-bit, with 4GB RAM limits that can kill a computer that is trying to keep hundreds of tabs open.
Smedberg now says we will "continue to build win64 Nightly builds and updates on the nightly channel. Users who need the 64-bit builds will have to download it after the migration point (date TBD)."
More information here: Mozilla Firefox 64-bit discussion
Written by: Andre Yoskowitz @ 25 Dec 2012 14:24