I have a G4 with 1.6GHz processor update (PowerLogix). I had to install 10.4 in order to get Java 1.5 (grumble). It worked fine... until I installed the 10.4.9 software update. Now, the machine locks up at the Apple logo. Any suggestions? Can't find any help on Apple's site or PowerLogix's. Doing an Archive and Install of the original 10.4 DVD for now. Can't use Intel Macs because I have several Classic apps for which UBs are not available.