/w/api.php Exception from line 104 of /www/translatewiki.net/w/includes/WikiPage.php: Invalid or virtual namespace -1 given.
Unfortunately API eats the backtrace.
I guess the cause is requests like these:
"POST /w/api.php HTTP/1.1" 200 313 "http://translatewiki.net/w/i.php?title=Special:NewMessages&lqt_method=reply&lqt_operand=27245"
Version: 1.21.x
Severity: major
2012-10-23 14:23:25 mw70 enwiki: [238f8828] /w/api.php?action=parse&page=Special:WantedCategories&format=json&redirects&prop=text%7Cheaditems%7Cdisplaytitle%7Crevid%7Csections Exception from line 104 of /usr/local/apache/common-local/php-1.21wmf2/includes/WikiPage.php: Invalid or virtual namespace -1 given
It seems these errors are currently spamming the exception logs on fluorine. Seemingly only enwiki, but I'm not sure of that.
Some extension (?) is creating a load of requests... guess we could do with some referers...
Not quite sure it's an API bug.. Though, the API could handle the error and die properly. The invokers should be the things that need to be fixed...