You can look up Winsock Error Codes here:
http://www.destructor.de/firebird/winsockerrors.htm

>> LK_NEW (Client) Sat Jun 17 10:49:32 2006
>> INET/inet_error: read errno = 10053
>>
>> LK_NEW (Client) Sat Jun 17 10:49:32 2006
>> INET/inet_error: receive in try_connect errno = 203
>>
>> LK_NEW (Server) Sat Jun 17 10:49:32 2006
>> INET/inet_error: accept errno = 10022
>>

10053 means "Software caused connection abort"
10022 means "Invalid argument"

That one

>> LK_NEW (Server) Sat Jun 17 10:49:32 2006
>> INET/inet_error: accept errno = 10022

means that "accept" (which is the Socket command for waiting for
incoming connections) passed an invalid argument. This could happen if
the port that accept wants to bind to is already occupied.

Is it possible you started two Firebird servers and both want to bind
to port 3050? (or whatever port you have configured in firebird.conf).


Best Regards

Stefan