mozilla won't run

[Jim]

I'm running a Personal Desktop install of 3.0.1 on a Powerbook 3400 with
144 MB RAM. I also have an identical PB with 3.0 installed.The 2
machines seem to be running the same build of Mozilla. Mozilla runs fine
on the 3.0 machine. It won't launch on the 3.0.1 machine. I even tried
starting it from the command line. After a few seconds, the command
prompt comes back. No error messages of any kind. And nothing in
/var/log/messages.

Any ideas?

-- 
Jim <jhart@bates.edu>