Power Mac G5 won't restart after installing 10.4.10 update

Good Morning,
Last night I finally updated my Power Mac G5 to Tiger. That went just fine and I verified that everything was still functional and I could still connect to the web via my DSL. No problems yet...
I then downloaded the 10.4.10 update from Apple and installed it. When asked for Restart or Shutdown I chose Restart. The beginning of my problem. Upon restart I got the chime and the grey screen with the apple logo followed by the spinning stopwatch icon. It just kept spinning...for like 20 minutes. Then the fans started to wind up louder and louder and the spinning stopwatch icon stopped in it's tracks. I shut it down. It happened again.
Suggestions?
Trying to start from a disc (while holding down the "C" key) didn't seem to work any differently and wound up at the same result. Ironically, it just came out of the extended Applecare warranty this past February.
Thanks for any suggestions in advance,
Jim

So you can't use Disk Utility to do a Disk Repair, as shown in this link, while booted up on your install disk? It won't get there? If it does, does your drive show up, and what is it's S.M.A.R.T. status please?
You could have some directory corruption. Let us know what errors Disk Utility reports and if DU was able to repair them.
Cheers!
DALE

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