Shuflie

I've just noticed something very strange going on with MS reader. I had set my processor speed to maximum performance to enable the 400MHz bus speed when I first updated to WM2003. Opening ebooks was a nightmare, one in particular would take about 5 mins of the busy indicator flashing on screen before the book would open, I had thought that MS must have messed up something in the latest version of the reader program. Just tried setting the speed to automatic and the book opened up in about 30 seconds. Has anyone got any ideas why the faster bus speed should have this effect on my Axim?