Hi, After updating from sage 4.6.1 to 4.6.2 I had trouble working with sage-notebook because default imports were missing. This is what I tried: If I run sage-notebook, login and try to run a command as simple as 3; I get a "NameError: name 'Integer' is not defined" error. If I run from sage.rings.integer import Integer; 3; everything works as expected. Also if I run sage -notebook (notice the space) then executing the comand 3; works. It's not a huge problem, but it kept me rebuilding sage and python for a week. Any idea about why is this happening? Best, Marc.