nruddock - Looks like any use of the OpenGL causes a delay. Using software only display and the scripts run quickly.

semidieu - Glad it works for you! I did disable my second monitor, and the script ran faster, but not enough different to justify losing the second monitor!!!  I haven't noticed any other graphics related issues like this, and I've been running WinXP64 since it was in beta.

Looks like the slow down is drivers/WinXP 64 on my side.  The SreeD software rendering seems to be just as fast as the OpenGL - and that's not right. I'll probably be trying out Vista soon, anyway. Things are bound to get worse before they get better ;)