WO Apps do not restart automatically after one server upgrade...

Hello,

We have upgraded one of our Mac OS X Server 10.4.6 server by moving  
all its disks (System and Data) from one PowerMac G4 2*867 to a  
better PowerMac G4 2*1420... Both have the same hardware  
configuration (else the motherboard): more than 1GB RAM on both, same  
PCI-SATA card with same disks and same PCI-Ethernet 1Gb card all  
moved from the old to the new computer... Main MAC address changed of  
course...

If all the other Mac OS X Server services restarted without any  
notice of the move, we were surprised that the WO Applications hosted  
on this server did not restart automatically at server start while  
they were restarting without any problem in the older machine...

Using JavaMonitor, the Apps cannot be restarted manually: JavaMonitor  
"tries" to launch them after clicking on the start button but does  
not succeed...

I finally had to "delete" the host and recreate it to be able to  
manually re-add each application instance and re-launch them...

After each server restart, the applications do not start unless I  
repeat all the operation (delete and re-create host, re-add instances  
and launch them)...

I look at the many logs but found not any clue of what was wrong: not  
any trace that the server even tried to launch these apps... I have  
just two clues:
- when I have to delete the host, its IP address is not written under  
its hostname in JavaMonitor's first column.
- in Server Admin, the date of WebObjects service start is said as  
"not available" while it was known and more or less equal to server  
start time with the old server...

Does anyone know what is happening ? Where can I look to get some  
info on why the apps do not restart automatically (JavaMonitor error  
log or wotaskd error log) ?

Kind Regards,

Luc Demarche