Infer .NET makes extensive use of the System.Random class for creating variates (such as the poisson).
Apparently whoever wrote this though made a mistake when they copied it from the numerical recipes book, and as a result this is supposed to be a pretty bad RNG (see here
http://connect.microsoft.com/VisualStudio/feedback/details/634761/system-random-serious-bug ) relative to what they claim it is on the documentation.
Is there anyway to work around this issue by specifying a different RNG