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A) Do you have a reference for this (not that I don't believe you, just interested)?
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http://www.pokerstars.com/security.html
which says in part:
--Quote--
SHUFFLE
"Anyone who considers arithmetic methods of producing random digits is, of course, in a state of sin." - John von Neumann, 1951
We understand that a use of a fair and unpredictable shuffle algorithm is critical to our software. To ensure this and avoid major problems described in [2], we are using two independent sources of truly random data:
* user input, including summary of mouse movements and events timing, collected from client software
* true hardware random number generator developed by Intel [3], which uses thermal noise as an entropy source
Each of these sources itself generates enough entropy to ensure a fair and unpredictable shuffle.
--Unquote--