I just did the upgrade from 1.30 to 1.60 on GoDaddy, it was totally automated and seemed to go fine.
However on my admin page all the menu items are screwed up. For example, Where it would normally say "Dashboard" it says "admin.sitemap.dashboardtitle" Where it would normally say "Sales" it says "admin.sitemap.saleshometitle"
All submenus and titles are screwed up too.
Check out the following screencaps to see what I'm talking about
http://www.gcmini.com/adminproblem.jpg
http://www.gcmini.com/adminproblem2.jpg
http://www.gcmini.com/adminproblem.jpg
http://www.gcmini.com/adminproblem2.jpg