problem with rendering time, premiere pro CS5, Please help!
 

First time using premiere pro CS5 to edit T2i footage. Coming from Vegas, it definitely improves the laggish playback problem. After hours of editing wedding footage and now I am finally ready to render. Export as MPEG2 wide screen high quality, and discover the render remaining time is 18hours for a mere 1 hour footage!!

Well, my machine is a year old, i7 920, 8GB ram, win7, 64bit. But 18hrs rending time?!

Please help, and guide me to the right direction. please please