Problem with iMac DV SE 500

[sinnott-armstrongn]

I tried to install YDL 3.0 on my iMac DVSE, thinking it would be as 
smooth as my older iMacstrawb233. I rebooted and held down C, and the 
bootloader loaded. in yaboot, I hit return. it ran checks and inits' 
and a blue text-mode popped up. Then it started up anaconda, but fell 
back to textmode. I did full system install, and it was 3% done the 
next morning when I got home at 5, it was 6% done, so I aborted. Do 
full install's usually take this long? should I limit it?
thanks for the help!