No, it is not... this is very strange.
I checked in the OS what is happening with port 80:
lsof -i :80
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
java 31845 root 99u IPv6 150789 TCP monitoring.local:www (LISTEN)
Then the web module became available.
My applications are configured as follows:
<application-ref disable-timeout-in-minutes="30" enabled="true" lb-enabled="false" ref="ejb_service"/>
<application-ref disable-timeout-in-minutes="30" enabled="true" lb-enabled="false" ref="web_client" virtual-servers="public"/>
Here is a part of my domain.xml.
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