This bug was filed from the Socorro interface and is report bp-4af3010d-98af-4ede-b59e-7e1ff2150520. ============================================================= Happens on ingatlan.com.
WFM, Nightly 41.0a1 (2015-05-25) and Firefox 38.0.1, both on Linux64.
Kami, can you reproduce this or was it a one-time incident? If you can reproduce it, does it also occur in Firefox Safe Mode?
This happened several times on Firefox 38.0.1, but I cannot reproduce with that latest stable. In fact I also upgraded the X and kernel so I do not know what solved the problem.
I think the fix in bug 1137723 might have helped. nsIFrame::IsBoxFrame was one of the signatures there, IIRC. There are only two reported crashes in the past 28 days for this signature, one in Firefox 37 and one in 33. Please file a new bug if it occurs again, thanks.