https://bugs.freedesktop.org/show_bug.cgi?id=40423
--- Comment #24 from Nicholas Miell nmiell@gmail.com 2011-10-01 16:59:16 PDT --- Already filed https://bugzilla.mozilla.org/show_bug.cgi?id=691003 yesterday.
Upstream jemalloc is fine (and has diverged rather significantly from Firefox's copy).