On 23 Dec 2004 08:06:48 -0800, "Jasan"
wrote:

I woke up this AM to find that our large round top window in our family
room had cracked during the night. It was 20-30 below zero last night
in Minnesota. I was wondering if the cold weather can cause this. Our
house was built in 2002 so the window is still actually pretty new. If
the cold can do this how does one prevent it from happening?

Just to be safe, when you replace it, have them chisel out the frame
and add extra rubber or caulk.