Logged In: YES 
user_id=6405

I've checked in some fixes to make empty passwords possible.  You'll    
need to get the code from CVS or wait for the next release (the 
backends needed a fix to allow null passwords). 
 
If you can bear to use passwords in the mean time, please do so (I 
expect to have 0.5.1 out in a week or two, depending on bug severity 
and demand).