SMG i have the same one but with 2 gig. Since mine has come back it has been fine. The problem was a motherboard failure, so basically that could happen to any laptop or computer for that matter. Frustrating when the thing was only 6 weeks old but what can you do. HP customer service was frustrating to say the least but I always managed to get connected to a call center in either Cape Breton or BC, so I didn't have to deal with not being able to understand the tech support person (aside from the local Glace Bay accent which i picked up on right away, since I am from close by there).
As for Vista, I am not a gamer so it has been fine for me. I had a bit of a glitch with compatibility with Simply Accounting but that is minor and I am pretty much happy with Vista now.