Where did you get this kernel, anyway? That kernel doesn't seem to be provided by Debian. I'm reassinging to the "kernel" package until more is known. Did you create the .deb yourself with `cd $linux; make deb-pkg`? In that case maybe the upstream kernel people have a problem. Did you even get the kernel source from the debian archive?
Sorry for omitting this piece of info; the kernel has nothing to do with Debian, it is a plain 2.6.11 from kernel.org with 2.6.12-rc1 and 2.6.12-rc1-mm4 patches applied. The .deb was created using
cd /usr/src/linux make-kpkg clean make xconfig make-kpkg --revision=5 kernel_image So possibly make-kpkg still remembers that root partition used to be hda3?