I used a freshly deployed Hudson 1.322 on Tomcat 6.x on Windows XP

When I wanted to define the first job, I entered the name and hit return while
cursor was still in the input field. I had not yet selected one of the 4 Job Types.

Reaction:
Hudson tried to do something and I got an error "page not found" instead of a
meaningful error message or blocking the action.

Unfortunately I did not make a screenshot but it should be easy to reproduce.

Priority is low anyway.