I have the same problem with an application running in a dual server requesting to the same DB, I do not know if it is part of the problem, but when we debug the application on our workstations, it works just fine, but when we put it in production, we get those errors at random, I can't seem to find a pattern to reproduce it.

From http://www.developmentnow.com/g/7_2004_5_0_0_131425/Intermittent-IndexOutOfRangeException--SqlDataReader.htm

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