There is something that changed from previous versions...

For the following code:

jQuery.getJSON('/any/url',
{ 'conc':[0, 5, 10], 'reads':[0, 5, 10]});

One used to get a url such as "/any/url?conc=0&conc=5&conc=10&reads=0&reads=5&reads=10" but now with 1.4.1 we're getting something like "/any/url?conc[]=0&conc[]=5&conc[]=10&reads[]=0&reads[]=5&reads[]=10", so instead of variables with the correct names, now we have those extra brackets.

How can we revert to the old behavior?