A user in the #wikipedia IRC channel commented on an error he thought amusing. Given that Domas and either Brion or Tim (and I think Brion) were discussing it briefly in #wikimedia-tech, I thought I'd grab the details. Can't actually get anyone to respond to my pokes right now...
URL: http://en.wikipedia.org/w/index.php?title=Talk:Japan&oldid=35775401
Error text: Fatal error: Allowed memory size of 52428800 bytes exhausted (tried to allocate 10597086 bytes) in /usr/local/apache/common-local/php-1.5/includes/Parser.php on line 301
Checking the code, that line seems to be in the middle of Parser::extractTagsAndParams() so gut instinct suggests, to me at least, that it's a massive chunk of text being handled somewhere, but that's pure speculation and could well be (and given my recent cockups, probably is) wrong.
Rob Church