Sarge and update-grub

[joebosak@uku.co.uk]

I have been trying to compile a 2.6.9 kernel under woody.  I used backports, 
but the kernels kept crashing - kernel panics, etc. 

So then I upgraded to sarge, using apt-get dist-upgrade and after changing 
my sources.list.  I now have a problem with update-grub.  It just seems to 
stop after detecting kernels.  It doesn't seem to ever write the menu.lst 
file out again.