I have been trying to do a "aptitude update/upgrade" on Etch for a couple of days now and it wants to install a new kernel (2.6.18-4-486), but it can't finish due to no /sbin/update-grub. Here is output from aptitude:
Setting up linux-image-2.6.18-4-486 (2.6.18.dfsg.1-11) ...
Running depmod.
Finding valid ramdisk creators.
Using mkinitramfs-kpkg to build the ramdisk.
The provided postinst hook script [/sbin/update-grub] could not be run.
dpkg: error processing linux-image-2.6.18-4-486 (--configure):
subprocess post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of linux-image-2.6-486:
linux-image-2.6-486 depends on linux-image-2.6.18-4-486; however:
Package linux-image-2.6.18-4-486 is not configured yet.
dpkg: error processing linux-image-2.6-486 (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
linux-image-2.6.18-4-486
linux-image-2.6-486
E: Sub-process /usr/bin/dpkg returned an error code (1)


I don't have update-grub anywhere on my system.
I guess I could install lilo, but I would like to fix the problem if possible.
Any help?

Thanks.

I fixed it by re-installing grub.
All is well now