User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1 From http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Array:sort : "If compareFunction(a, b) returns 0, leave a and b unchanged with respect to each other, but sorted with respect to all different elements." This behavior occurs in IE and Opera, but not Firefox. When using array.sort(compareFunction) and function compareFunction(a, b) { return a - b; }, Firefox will often reverse the order of a and b relative to each other when a-b=0. Reproducible: Always

Duplicate of Core bug 321803 -> Core bug 224128?

*** This bug has been marked as a duplicate of 224128 ***