This is actually a two-machine household - and my Beloved uses a Compaq laptop on which she has Ubuntu loaded. She downloaded the latest Upgrade (10.04) which took ages first to download and then to install. When she obeyed the instruction to restart, the machine got to the Ubuntu opening screen and then crashed - it still does this, sometimes showing a pattern of vertical lines first. If you interrupt and go to the machine's startup menus, there are a number of kernels she does not know what to do with - and I know less.
Any thoughts? We are in Hackney, and will feed, buy drink, dedicate poems etc. for help.