As Mozilla is working on mobile versions of Firefox there's some hope that the developers will spend more time on all the memory usage problems that are plaguing Firefox. The Tech Report writes:
On his blog, Red Hat developer and Mozilla board member Cristopher Blizzard says Mozilla's push toward the mobile arena is causing the organization to spend more time examining memory usage problems. Some early data analysis suggests Firefox "really doesn’t leak that much memory at all. But it does thrash the allocator pretty hard and that’s what causes the perception of memory leaks." The problem is described in more detail in this blog post, but Blizzard predicts, "Over the next few months it will be very interesting to see what happens with both memory usage and perceived performance especially as we connect those numbers to a successful mobile strategy."