We have recently address similar issue with current version of RadListView. Therefore the fix will be included in the SP1 of Q1 2010 release. Meanwhile you may check the next internal build, as it should contains the fix too.
However, taking into account the mentioned method execution count, you should check your logic for double binding. In normal conditions, with ViewState enabled and on initial load, even without
the fix, the method should be called 8 time not 16.
the Telerik team
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