> localhost:C:\Program Files\Firebird\Firebird_1_5\security.fdb
> 127.0.0.1:C:\Program Files\Firebird\Firebird_1_5\security.fdb
> G7-850-1:C:\Program Files\Firebird\Firebird_1_5\security.fdb

Hi Bill,

This may not be your problem this time, but there have been some
changes that means the security database either has or will reject any
connection due to the security considerations. (This may be a FB2
thing, but something worth considering if you are planning on
connecting to the security database for some business function).

Adam