Since installing the Quicktime 7.2 and iTunes 7.3.1 updates on my MacBook, I’ve been unable to launch PPC applications through Rosetta. It appears that having Java 6 installed has caused the prebinding process to crash.
Following the process documented in a comment by Darlene on a blog, I’ve been able to launch PPC applications through Rosetta again. The process is basically removing Java 6 and then force running the prebinding process. I didn’t even need a restart which is nice.
EDIT: I’ve also had to download and install Java for Mac OS X 10.4 Release 5 to get Java working again.