Comment 30 for bug 484499

This fix does not resolve my bug (bug 676405). When I try upgrade-grub I get a syntax error: "newline unexpected"

However can someone explain a little about grub to me?
On my desktop I have Ubuntu 10.04 installed on one partition of my drive and 10.10 installed in another. I use grub to choose between the two. How does this situation affect the grub-update function? Does the grub in the 1st menulist affect both distros? Is this type of install bad practice, am I better off having my development install in a virtual drive to minimise damage to my Ubuntu LTS distro?