Problem is the installer for firebird 2.0 rc1 currently changes permissions on /etc/services file to 600 and permisions need to be 644.
This has been posted on Firebird Devel List and is patched.
I will repost it here so others have less problems finding it.
REPOST FROM Firebird Devel List
The FB-2-beta2 still changes the access rights to
I finally figured out why my java (after
fb-installation) failed to work with a network. This
failure had nothing to with fb, even a simple
The reason is, that the install process sets the access
rights to /etc/services from 0644 to 0600!
This prevented Java to access the network (except for