>To flesh Paul's point out a little the problem is that VFP COM components don't support multiple simultaneous calls to the same method when registered under MTS. This of course was one of Microsoft's major selling points for MTS. No worries about multi-threading. Just code it single user and go! But if more than one user calls a VFP COM method at the same time, the method calls get queued up and are handled sequentially. The VFP folks at MS are supposed to be fixing this but when we'll see it is anybody's guess.
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The fix is working and basically ready to go. There is some discussion going on internally about how to distribute the fix (service pack vs download patch).