To anyone experiencing this: Can you try to get another Valgrind log,
this time using Massif, the heap profiler
(http://valgrind.org/docs/manual/ms-manual.html)? It could be that we're
not leaking, just allocating too much/in a loop, or that we're leaking
references in the thumbnailing code somehow.

One of the attached logs on one of the related bugs had allocated ~500MB
in 2M allocations, meaning that the average allocation size is quite
small, so it's probably something very subtle that's going on, maybe a
race or a livelock in the thumbnailing code introduced since the GIO
merge (maybe leaking a URI reference? Seems to fit the 250ish-byte
theory.) Either way, without being able to see where this is coming from
we're completely blind to the issue, a Massif log captured during the
issue would help a great deal.

Also helpful: are you all using dual or many-core systems?

-- 
nautilus memory leak
https://bugs.launchpad.net/bugs/204413
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