This weekend I tested at a client site the psqlODBC Windows drivers as of 2013/05/21 (what will eventually be 09.02.0100) from the github source. When printing invoices, intermittently a client (I could reproduce on all three of the test machines) would hang (freeze--must kill with taskmanager). The client might have to print just one, or 13, or as high as 61 individual jobs before the hang would occur. The fix is to set the UseServerSidePrepare back to 0--then no hangs can be reproduced. Enabling mylog makes it much harder to reproduce the hang, but I have been able to produce 4 mylog files using my own test machine that log up to the hang.
When the client system would hang, would it cause the PG backend to crash and restart? Also, were other clients concurrently connected to the same backend affected as well?
I'm hoping that the issue that you're having is related to the issue I've been having such that a single patch will cure both!
