Windows Vista Noobie

I just realized how noob I am when it comes to Windows Vista. Applications crashes itself (Microsoft Visio 2007) or closes by itself for no apparent reason. If you are thinking about the authenticity of the application, I got it from MSDN software library along with the key and I have activated the software. It still crashes.

I get irritating prompts every time when I install applications or make system changes. Writing to sda1 C: also need to prompt this and that.

Time to call up Microsoft and downgrade the Vista Business to Windows XP.