Ubuntu 8.04

The distro images tend to be fairly minimal - leaving it up to the customer to set up things exactly how they like it. There's a 'lamp-server' task in aptitude, if you install that things will probably be set up fairly reasonably.

Note that the only difference between the ubuntu editions is what's installed by default - you can take a desktop edition to a server edition (or vice versa!) by installing and removing the appropriate packages.