Sawfish 1.5.3 didn't work on ubuntu 12.10

I installed Sawfish(with sudo apt-get install sawfish) but it's not 
working.  All I see when I start X is the default stipple background: no 
programs, no menus, no pager.  I've tried middle-click and clicking both 
buttons simultaneously, but nothing happened.

I've already read the Sawfish FAQ and user guide, and I've already 
searched the Web, but I still cannot solve this problem.  I have also 
tried to change a mouse, but it didn't make sense.

English is not my native language; please excuse typing errors.  Thanks 
for your consideration.

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Sawfish ML