Yall wanna know something weird? Even before I had SP1 I never had any crashes. It got kind of laggy a few times but yeah.
I was able to reinstall Vista HP and install SP1 in 45 minutes (last week) and SP1 is really nice. Smoother, faster boot, way faster file transfer times, and a lot of others.
I don't see any new menus or anything like that.
If that site is going slow for you, around 250kb/s, which is what it went for me last week, then just let it go. It shouldn't take too long anyway.