[K12OSN] Realtek 8169 and 2.6.32-220.2.1.el6.x86_64

[Jeff Siddall]

Watch out for the r8169 driver in the SL6 2.6.32-220.2.1.el6.x86_64 
kernel if running at 1000 Mbps.  My system began freezing frequently 
after upgrading to this kernel when network activity got high.  TUV has 
a bug report about this already.

Installing the driver off the Realtek site seems to have solved it for 
now but it was a pain to track that down.

Jeff