Olá, após uma boa procura não encontrei onde desabilitar o log do JBoss que fica mostrando abaixo, ele só enche o arquivo e polui a visualização:
2011-02-23 00:41:40,031 DEBUG [com.arjuna.ats.txoj.logging.txojLoggerI18N] [com.arjuna.ats.internal.txoj.recovery.TORecoveryModule_3] - TORecoveryModule - first pass
2011-02-23 00:41:40,031 DEBUG [com.arjuna.ats.jta.logging.loggerI18N] [com.arjuna.ats.internal.jta.recovery.info.firstpass] Local XARecoveryModule - first pass
2011-02-23 00:41:50,034 DEBUG [com.arjuna.ats.arjuna.logging.arjLogger] Periodic recovery - second pass <Wed, 23 Feb 2011 00:41:50>
2011-02-23 00:41:50,034 DEBUG [com.arjuna.ats.arjuna.logging.arjLogger] AtomicActionRecoveryModule: Second pass
2011-02-23 00:41:50,034 DEBUG [com.arjuna.ats.txoj.logging.txojLoggerI18N] [com.arjuna.ats.internal.txoj.recovery.TORecoveryModule_6] - TORecoveryModule - second pass
2011-02-23 00:41:50,034 DEBUG [com.arjuna.ats.jta.logging.loggerI18N] [com.arjuna.ats.internal.jta.recovery.info.secondpass] Local XARecoveryModule - second pass
2011-02-23 00:43:50,054 DEBUG [com.arjuna.ats.arjuna.logging.arjLogger] Periodic recovery - first pass <Wed, 23 Feb 2011 00:43:50>
2011-02-23 00:43:50,054 DEBUG [com.arjuna.ats.arjuna.logging.arjLogger] StatusModule: first pass
2011-02-23 00:43:50,054 DEBUG [com.arjuna.ats.txoj.logging.txojLoggerI18N] [com.arjuna.ats.internal.txoj.recovery.TORecoveryModule_3] - TORecoveryModule - first pass
2011-02-23 00:43:50,054 DEBUG [com.arjuna.ats.jta.logging.loggerI18N] [com.arjuna.ats.internal.jta.recovery.info.firstpass] Local XARecoveryModule - first pass
2011-02-23 00:44:00,057 DEBUG [com.arjuna.ats.arjuna.logging.arjLogger] Periodic recovery - second pass <Wed, 23 Feb 2011 00:44:00>
2011-02-23 00:44:00,057 DEBUG [com.arjuna.ats.arjuna.logging.arjLogger] AtomicActionRecoveryModule: Second pass
2011-02-23 00:44:00,057 DEBUG [com.arjuna.ats.txoj.logging.txojLoggerI18N] [com.arjuna.ats.internal.txoj.recovery.TORecoveryModule_6] - TORecoveryModule - second pass
2011-02-23 00:44:00,057 DEBUG [com.arjuna.ats.jta.logging.loggerI18N] [com.arjuna.ats.internal.jta.recovery.info.secondpass] Local XARecoveryModule - second pass
2011-02-23 00:46:00,077 DEBUG [com.arjuna.ats.arjuna.logging.arjLogger] Periodic recovery - first pass <Wed, 23 Feb 2011 00:46:00>
2011-02-23 00:46:00,077 DEBUG [com.arjuna.ats.arjuna.logging.arjLogger] StatusModule: first pass
2011-02-23 00:46:00,077 DEBUG [com.arjuna.ats.txoj.logging.txojLoggerI18N] [com.arjuna.ats.internal.txoj.recover
alugém arrisca? 
Obrigado!