Last modified: 2012-08-28 19:48:44 UTC
Observed regularly (although not "all the time") on twn. Steps to reproduce unknown. PHP Warning: fmod() expects parameter 1 to be double, string given in /www/w/languages/utils/CLDRPluralRuleEvaluator.php on line 113
Should be fixed soon, at least before wmf11 is branched.
https://gerrit.wikimedia.org/r/#/c/21553/ silences the warnings (with the con that invalid stuff passed from code aren't caught). I was manage to find one real bug though, it's filed as bug 39679.