I made the switch too from XP to Ubuntu. After years of "playing" with Red Hat on desktop and server with alot of help from friends and coworkers I decided it just wasn't as comfortable and stuck with Windows. That is until Ubuntu.
Installed Ubuntu just as you did and loving it with one minor exception. Ubuntu loads a ton of Windows equivalent apps for email, internet, graphics etc some web plug-ins still have me stumped like Flash and some streaming media (video) sites that support Real Player or Apple .mov files.
Were you able to correct these or have references I should check out?