Ok.. read this then
(This is taken from
http://www.experts-exchange.com/Q_20667578.html)
I had the same problem with store.exe leaking when Win2000 SP4 was installed.
I uninstalled and it cleared the problem.
Unfortunately this left the server unpatched, so I installed patches
324096,324380,329115,329834,810833,817606,822679,811114,815021
as these where deemed necessary.
This then brought the problem back.
I successively removed each patch individually, rebooting each time, until i was left with 329834 and 324380
I removed these at the same time (i was fed up at this point) and the problem cleared again.
Whether it's these patches alone or they interact with others I do not know, but i now have installed
Exch post sp3 rollup 813840, 823559,823980,324096,329115,810833,817606,811114,815021
and it is working nicely..
So it looks like hotfix 329834 and/or 324380 is the problem...
Good luck!
Also a good read is this from MS where they admit there are problems with store.exe
http://support.microsoft....spx?scid=kb;en-us;q322125