I seems i did some mistake, and installed Ubuntu server on my home based ubuntu box.
and the problem is that GRUB places the server edition as a priority boot in the menu, especially when I upgrade the kernel or the release.
How can I remove the server from the GRUB menu permanently? can I un-install Ubuntu server edition?
You need to edit your /boot/grub/menu.lst to change it to be what you want. You can do this manually (how I've always done it), but there's also at least one GRUB menu editor KGrubEditor that will help you do this.