Important News=> Service Pack 1 for SP2013 has been taken back by Microsoft until a new package is published.
http://support.microsoft.com/kb/2817429
http://www.toddklindt.com/blog/Lists/Posts/Post.aspx?ID=486
http://support.microsoft.com/kb/2817429
http://www.toddklindt.com/blog/Lists/Posts/Post.aspx?ID=486