Maybe this is a good point to investigate, but as i did a fresh install of java on both servers, the original policy files in '/opt/jre/lib/security are identical. I removed all previous java versions, and checked there is only a java.policy file on both servers (see below):

SERVER1 (test app is running ok)
Fedora release 7 (Moonshine)

# ll /opt/jre
lrwxrwxrwx 1 root root 11 2010-02-12 22:08 /opt/jre -> jre1.6.0_18
# which java
/opt/jre/bin/java
# md5sum /opt/jre/lib/security/*
88b31bec85c02c2df16aedfb72fe9cc6 /opt/jre/lib/security/blacklist
05e40de38907d0d524fd7b182cf9036b /opt/jre/lib/security/cacerts
28a85beff3ef87d4f0c643c52f183a3d /opt/jre/lib/security/java.policy
5ea81df9cf4378e9020371208af0b9c7 /opt/jre/lib/security/java.security
921f971b69450756efdd5e14322e1037 /opt/jre/lib/security/javaws.policy
2af0175bad9056cb16b2ec02a5660039 /opt/jre/lib/security/local_policy.jar
ded8e98162e0e4e0126ca032855b7049 /opt/jre/lib/security/US_export_policy.jar
# find / -iname java.policy
/opt/jre1.6.0_18/lib/security/java.policy

SERVER2 (test app is not running)
Fedora Core release 5 (Bordeaux)

# ll /opt/jre
lrwxrwxrwx 1 root root 11 Feb 13 07:01 /opt/jre -> jre1.6.0_18
# which java
/opt/jre/bin/java
# md5sum /opt/jre/lib/security/*
88b31bec85c02c2df16aedfb72fe9cc6 /opt/jre/lib/security/blacklist
05e40de38907d0d524fd7b182cf9036b /opt/jre/lib/security/cacerts
28a85beff3ef87d4f0c643c52f183a3d /opt/jre/lib/security/java.policy
5ea81df9cf4378e9020371208af0b9c7 /opt/jre/lib/security/java.security
921f971b69450756efdd5e14322e1037 /opt/jre/lib/security/javaws.policy
2af0175bad9056cb16b2ec02a5660039 /opt/jre/lib/security/local_policy.jar
ded8e98162e0e4e0126ca032855b7049 /opt/jre/lib/security/US_export_policy.jar
# find / -iname java.policy
/opt/jre1.6.0_18/lib/security/java.policy

Is there some possibility of the JVM read policy data from somewhere else?

There is no .java.policy in the user home directory.

Regards,

Fabiano

--- In Firebird-Java@yahoogroups.com, Roman Rokytskyy <roman@...> wrote:
>
> > Do someone have some clue about this? Am i doing something stupid?
>
> What about the security policy in JVM?
>
> Roman
>