Ubuntu Feisty (7.04) is the latest version of Ubuntu. Here's the quick list of new features for your enjoyment, but you should really upgrade to see everything for yourself.
If the "COM Surrogate has encountered an error" message is driving you crazy, then you should really read this article.
You can change the boot logo on Windows Vista using a small utility.
Did you know you can legally extend a trial version of Windows Vista to 120 days?