the "data" parameter is always undefined in the success callback in jQuery > 1.5

the "data" parameter is always undefined in the success callback in jQuery > 1.5

I have a really simple scenario which got broken after upgrading to 1.5. 

the defined handler for the success callback in $.ajax doen't set the data parameter - it's always undefined. This works fine in 1.4.4.

Could someone clarify if this is a bug or a breaking API change ?

Thanks,
Angel