Mounting root filesystem... forever

Hi guys,I've been running my first ever Linux server for a couple of months and I went for Ubuntu 6.06. Love it! :DIt's been running fine for a while but it will no longer get past the line that says "mounting root file system" when booting up. I did an install on the HD - is there any way I can repair this maybe by booting off a CD? Any other ideas?Cheers,G.