... the 8i upgrade was about 25 minutes.

You either know the stuff or not. I will say that I have about 10 yeasrs experience before I decided to go for the certification.
8i upgrade in 25'?? And you had 10 years of 8i experience? Or you think that Version 5 experience helped in the 8i upgrade :-)

I wish you the very best of luck on the 9i upgrade, you may try to break your record and make the 9i exam in 15'.

Pardon me that I am so sceptic but if I say to someone that a guy over the Internet called GARYM, made the 8i upgrade in 25', well, they might not really buy it :-)