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>Thanks for the heads-up. I tried all of the suggestions in your thread and none of them improved the situation. In fact, the application and data are both on the local machine, so the network isn't even involved at this point. There is something clearly going on in Win 7 / 2008 that was obviously not present in XP, and I'm at a loss as to what is causing the performance difference.
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sounds like a little differential coverage profiling is in order...
this way you can at least identify when in your code the difference occurs