Can't kill rhythmbox

[Senectus .]

I have two processes that wont die..
senectus   23916  0.2  2.1  63380 11176 ?        D    10:16   0:00 rhythmbox
senectus   23933  0.3  2.1  63380 11176 ?        D    10:18   0:00 rhythmbox

I've tried killall -9 rhythmbox
and with the PID's as well.. they don't do anything.. no error, no
confirmation... nothing.
Any idea's on how to kill them? 

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Ubuntu Hoary 5.04 
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