https://en.wikipedia.org/w/index.php?title=Edamattom&diff=562268939&oldid=562266260 <- this was from an attempt to swap a references section and an external links section. We cannot have this scale corruption on launch. I'd be most grateful if someone could find out what the heck happened, and also confirm with some degree of certainty that it won't happen again.
Version: unspecified
Severity: major
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=51677
Given the severity, I'll try to recreate what I was doing but it was basically an attempt to cut the existing External Links section and paste it after the References. As I had made other changes, I can't rule out the idea that I could have stopped editing at the first sight of white pawns; certainly, I saw a couple just before the main "whumpfh" of the loop kicking in, but the loop might have already started by then.
Browser: Chrome latest (27.0.1453.116) running on Windows 7. Plenty of RAM (before the loop, anyway :P).
Oh, meant to add that the loop may well have been infinite but I tried to force the save (with ultimate success).