i just typed up the post "random reboots". my new PSU is an Antec Truepower 550. it is virtually silent and extremely stable as far as I am concerned. (my old PC had an Antec PSU as well, which lasted more than 3 years and i am sure it will last even longer as i am giving it to my parents now). if you are looking for about 480W, i would recommend the Antec Truepower 480 as well!