URGENT:LOG PROBLEM IN ONLINE 7.3

Hello, I am installing Online Dynamic Server 7.3 (NT). Although I have programmed in a Informix enviroment I am newbie on installing it. I have been given only a server, a machine and some pdf manuals. I think that the instalation process is very easy, and it is installed well, and a first server instance too. But the problem raises when I try to create a new database. With SQL editor, what I do is: create database dbname with log; and then I launch the script with tables, constraints, etc. Everything is ok, but when some statements have been executed (not too much) the SQL Editor seems to crash, so I kill the task. If I init another session, and try to drop the database, I can't because the server returns : SQL Error (-425) : Database is currently opened by another user. [ ISAM error -107 : ISAM error: record is locked. ] and I am sure there isn't another session open. If I launch all the sentences within a transaction, all are executed properly, and SQL Editor doesn´t crash. So I think there's some problem with logging. (If I create the database without log it also fails) Maybe the nunmer of log, or logsize. This is the part of the file. The parameters are default ones. # Physical Log Configuration PHYSDBS rootdbs # Location (dbspace) of physical log PHYSFILE 2000 # Physical log file size (Kbytes) # Logical Log Configuration LOGFILES 10 # Number of logical log files LOGSIZE 500 # Logical log size (Kbytes)LOG_BACKUP_MODE MANUAL # Logical log backup mode (MANUAL, CONT) Can anyone tell me what could be wrong? I am lost! Best regards, Aurelio