Downloaded 9.1 Update the other day.
Installed with no issues, until I rebooted.
Much slower on start up with my machine.
Internet connection through my cable modem slowed to almost a crawl (not sure if any OT was affected or not)
Kennsington Optical Mouse did not work in Quake, ONI demo or any other game that I tried.
All other apps opened slower than with 9.04
I tried just about everything with the mouse, latest drivers, accelerate your mac had a forum running and addressed mouse issues, but no luck.
So.....last night I did a clean install of 9, updated to 9.04 with new firewire etc....and now I am happy again....mouse works great, internet flies again...almost T-1 speed right now.
unless someone shows me why I need 9.1, I am going to stay with -04
G-4, 450 with AGP, DVD Ram, Zip, 256 meg of ram
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Mac'in in Hawaii!