Adobe reader 9 leaks user objects

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when showing 2 pdf files on different pages,
i see user objects getting higher , higher.

is there information on user object leaks ????

i use ocx in visual studio environment show pdf content.

open pdf document in internet explorer

open task manager , check user objects.
(by default column not visible , have add user objects column)

now press refresh button again , again , watch user objects go , not down again.....


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