In Response To 'Re: Re: Re: Re: Variance freezes for certain sa...'
This is very strange and I can not reproduce this failure.
A possibility which comes to mind is: do you use a Linux version with self-compiled libgmp.so or other math-related libraries? Mathematica brings its own libraries with it but maybe something went terribly wrong during/after installation. If so, did you do a 'make check' after compilation of your self made libs?
If that is not the case it might be worth the effort to uninstall Mathematica and to do a complete reinstallation.
P.S.: this is what I get in version 8:
In:= SeedRandom; (* to get a reproducable result *)
Out= 8.0 for Microsoft Windows (64-bit) (October 7, 2011)