Ubuntu or XP Pro?

<p>I am currently using XP Pro with service pack 3 on my PC. Over the years I have tried several versions of Ubuntu and have always had to go back to XP Pro. While XP Pro seems to work fine, I am always drawn to Ubuntu for some reason. Maybe it is because of the features etc...</p> <p>I would like some advice as to whether I should install Ubuntu 10.04 on my PC. My PC is circa 2002 with 512MB or RAM and an 80GB HD. I don't want to spend any money upgrading this old PC.</p>