Update ::
https://github.com/openlayers/openlayers/issues/461
OpenLayers-2.12-rc2 + jQuery-1.7.2 Memory leak in Internet Explorer 9
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Memory leak in Internet Explorer 9 (Browser-Mode: IE9, Document-Mode: IE9 standards) when reloading page continuously.
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Browser-Mode:IE9, Document-Mode: IE7 and IE8 do NOT have this memory leak.
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IE 10 Consumer Preview do NOT have this memory leak
