Most likely the true answer is it is a combination of several different factors.
Yup, the sun, the sun, and ummmmmm...let's see...oh...the sun.
27 posted on 09/12/2007 4:18:47 PM PDT by HerrBlucher
(He's the coolest thing around, gonna shut HRC down, gonna turn it on, wind it up, blow em out, FDT!)