It gets through downloading a half gigabyte, trundles a bit and whines:

Transaction Check Error:
   file /lib64/libasound.so.2.0.0 from install of alsa-lib-1.1.0-4.el6.x86_64 
conflicts with file from package libasound2-1.0.24.1-35.el6.x86_64

<grumble><mumble><bitch alot>
Trying a hail Mary.... yum --releasever=6.11 update sl-release

{o.o}