I am also experiencing issues with my early 2011 MacBook Pro 15" here in Japan. The machine will boot, however, I like another poster on here, do not get a chime.
iPhoto will simply not install, neither am I able to install the Motion Additional Content that has also seemingly been released. I had great difficulty in installing iTunes and almost every install has taken a minimum of 3 attempts and others taking more than 10. I have bumped up my memory today to see if that makes a difference, but not really.
I am unable to complete my work and it is getting very frustrating, especially when I have two very important presentations looming the end of next week and the week after.
I had considered a purchase of the new Retina MacBook Pro, but every Apple purchase is on hold indefinitely, until this issue is resolved.
For comparison and informative purposes, my 13" unibody 2009 MacBook my partner's iMac, MacMini were all updated successfully (some repeated attempts were necessary in some cases) and no obvious issues have been noticed since.
This is clearly a MacBook Pro 15" issue in my opinion.