Fresh install of ubuntu 10.10 server with a 2.5 classic Firebird setup. Everything works perfect.

However:
gbak -c -v -user sysdba -pass mypass backup.bck base.fdb

gbak: committing metadata
gbak: ERROR:COLLATION DS_DA_DA_NOCASE for CHARACTER SET ISO8859_1 is not installed

I have tried to edit RootDirectory in /usr/lib/firebird/2.5/firebird.conf but no success.

I can find specific attempts for a Windows solution, but none for linux. Any linux / firebird gurus in here that can give me a hint?