Wow! Not smooth at all. BUT I finally got it updated. My first issue was I should have kept reading this post and find out that I needed to update Clover; I was running 10.5.3 on Clover r49xx (I forgot the number). I did the update, and I just got the Apple logo on a black screen. No progress bar. I rebooted and went back on this site and started to read and found out I needed to update Clover. I updated first to r5102 which is the highest version in Tonymacx86. I did read that someone had success with this version. It rebooted fine to 10.5.3, and I downloaded the update again. On the reboot after, again I got the black screen with Apple logo and no progress bar. I tried booting back into 10.5.3, but this time I got the black screen and no progress bar for some time. It eventually booted back in to 10.5.3 (about 5 minutes!). I then read more and found the link to Clover r5107. Apparently this is the key version. After updating Clover to this version the OS update worked! Like others have said it didn't go to the designated boot disk for install; I had to manually choose it. Now all is well again and I'm running 10.5.4.