I have a Dell Mini 10v with NBI 0.8.4. The Mini has Snow Leopard 10.6, Ubuntu 10.04, and Windows 7 Ultimate on it. I'm just wondering if it's safe to upgrade to 10.6.3 after running NBI and that I won't have trouble booting up again. I've never really had a reason to upgrade, but since my MacBook is getting fixed right now and I really want to try iOS 4, which requires iTunes 9.2, I guess I finally have a reason. I just tried install iOS 4 on my iPhone with iTunes 9.1 and it's stuck right now. My Mini is my iTunes computer and I can't afford to lose all my apps, photos etc.