Something in this regression window: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=028722efe7a8&tochange=76a717c52203 caused a regression in the trace-malloc leak numbers on Windows: http://graphs.mozilla.org/graph.html#tests=[{%22test%22:%2228%22,%22branch%22:%221%22,%22machine%22:%22107%22}]&sel=1263985556,1264041299 I have NOT checked whether this regression is present on other platforms. Unfortunately, the logs are gone after two weeks, so we can't see what leaked; with the data in the logs it would likely be trivial to figure out. (And catlee's scripts don't tell us about these regressions, so we ignore them, since we're now ignoring all tests that catlee's scripts don't tell us about.)