Memory Leakage in IE 8

We are seeing a problem with multiple editors [ could be the same with single editors ] too , like when we do Ajax loading / destroying editors in each page --- IE8 doesnt actually release the Memory even though we call destroy editor . IE just leaks the memory while other browsers handle them pretty well .

Can anyone tell me how to fix this issue ? We have around 8 editors and each time 20-30 MB gets added to the memory which is a show stopper .