jQuery.cache growing

jQuery.cache growing


After a page is loaded jQuery.cache is this :
/*
{ "1": { "events" : {"unload":{}, "load":{} } }, "2": { } }
*/
After: $("#toolbar").data("A","B");
jQuery.cache becomes :
/*
{"1":{"events":{"unload":{},"load":{}}},"2":{},"3":{"A":"B"},"4":
{},"5":{},"6":{},"7":{},"8":{}}
*/
Caches 2,4,5,6,7,8 are created too.
Is this a feature or a bug ;o) ?
-- DBJ