sortable serialize returning empty string

sortable serialize returning empty string


Hi all, I am having endless problem with a sortable list:
basically everything seems to be working fine, the sorting etc, but
the
serialize function returns an empty string? I am using jquery 1.2.6
...
$("#test").sortable({
placeholder: "test",
axis : 'y',
update : function(e,ui){
console.log($(this).sortable("serialize"));
...