Well a little over a week ago I got Vista SP1 (Service Pack), and it is basically an update to improve performance and stability. Anyways When I first saw it was available in my update manager I was wondering if it was a glitch or something because it hasn’t been released to the public yet, just manufacturers and public gets it around mid this month. So I hit refresh or research, whatever you want to call it, and well it still appeared, so I was like awesome and clicked install.
After downloading, it well of course installed, but taking after the Zune welcomed me. And that made it true that it wasn’t just a glitch. yay 
Then after clicking next and whatnot it installed then restarted and configured, took a bit longer than a regular update, but hey it is, it’s a SP. And to make sure it really installed I checked my computer, or system.
As you can see it says SP1, and some more of my stats. After installing I noticed an increase in transferring files and coping them, also the archiving. I guess there were more improvements but haven’t really noticed them. I heard it helps out people with laptops because it increases the battery life since it uses less processing power to operate normally, but not really sure since I’m running Vista on a desktop. Anyways so far so good with SP1, no major problems for me, but really didn’t run into many before the SP. Some of my problems are a couple old programs I had don’t work with a 64 bit OS, which I run, sucks but oh well I can find some other program to do what I need. So can’t wait till 64 bit becomes more standard. But hey that’s what I rick running something new or newer, just like being an early adopter of Vista, you find out first hand it kind of sucks.
Oh after talking to someone I figured out why I got SP1 early the legit way, not changing the registry. I got it early because I have OEM activation key, I thought all activations keys were the same, but guess not.