SW07 SP3.1 to SW08 SP3.1 upgrade painfully slow!

I'm using 2008 SP3.1 Installation Manager. I have a localdownloaded copy of SW08 and SW08 SP3.1 on a network drive. Iselected upgrade instead of install new installation. Theworkstation is running Windows XP SP2. Very fast quad core PC.

Task manager is showing the machine is 98% idle. Installation isexcruciatingly slow. It has been running for 3 hours and is only68% complete. It went from 57% to 68% in the last 2 hours. What'sgoing on? Why so slow?SolidworksAdministration