profiling: dropping hotshot profiling. --profile as a unique profiling option
hotshot was an experimental module, which is broken for Python < 2.5
And even for Python >= 2.5 users, hotshot usage is discouraged: cProfile
(formerly lsprof) should be used instead.
adding a
abort: username 'foo\nbar1' contains a newline
abort: username 'foo\nbar2' contains a newline
transaction abort!
rollback completed
abort: username 'foo\nbar3' contains a newline!