Not to be the guy to bring this up again, but if this is targeted for development why are sessions still limited to consuming 2GB of memory? Why is nightly still the only branch with 64bit builds?
You'd be amazed how small a difference 64-bit makes in browsers. And in most apps for that matter.
Source: I package apps for portable use for PortableApps.com. We analyze many of our apps for whether the trade-off of a size increase including both the 32-bit and 64-bit versions of an app is outweighed by the performance or stability advantages of the 64-bit version of a given app. Including the 64-bit version is worth it in VERY few instances. Even then, it won't help most users.
