The One Year Rule is "Never buy software within one year of it being released". Software these days is so complex that there's no way any software house can hand-on-heart tell you that they have tested every conceivable combination of keypresses. It is thus given that "early adopter" users will find lots of bugs, which I'm sure would be really annoying. This rule applies particularly to operating systems like MS Vista. This approach is also known as "Never Buy Version One"
