Dear List,<br><br>I have tried running identical code (same model,
data, and initial values, with the same random seed set after the model
is checked) on 4 different computers, using the same version of WinBUGS
(1.4.3):<br>

<br>1. Windows Vista, 64 bit<br>2. Windows Server: Server 2003, 64 bit<br>3. Windows XP, 32 bit<br>4. Windows 7, 64 bit<br><br>The
results are similar (but not identical) for computers 2-4, but computer
1 (Vista) produces quite different MCMC chains. When I run the same
code multiple times on the same computer, the chains look the same. Has
anyone ever encountered a similar problem? I haven&#39;t been able to find
a solution in the email archives. I&#39;ve tried running WinBUGS in XP
compatibility mode on the Vista computer, but it made no difference.<br><br>Thank you, in advance, for any insights you might have.<br><br>Best wishes,<br><font color="#888888">Sandy</font>
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