Fehlermeldung beim starten (logging)

Folgende Fehlermeldung kommt beim Serverneustart.

19.04.2013 - 11:33:57.023 DEBUG SysOutOverSLF4JInitialiser - Your logging framework class ch.qos.logback.classic.Logger should not need access to the standard println methods on the console, so you should not need to register a logging system package.
19.04.2013 - 11:33:57.039 INFO SysOutOverSLF4J - Replaced standard System.out and System.err PrintStreams with SLF4JPrintStreams
19.04.2013 - 11:33:57.045 INFO SysOutOverSLF4J - Redirected System.out and System.err to SLF4J for this context
19.04.2013 - 11:33:57.050 INFO Starter - Starte...
19.04.2013 - 11:33:57.055 INFO Starter - Checking license
19.04.2013 - 11:33:58.469 INFO Starter - -------------------------
19.04.2013 - 11:33:58.471 INFO Starter - Lizenz: Basic-Edition
19.04.2013 - 11:33:58.476 INFO Starter - ESPA: false
19.04.2013 - 11:33:58.477 INFO Starter - -------------------------
19.04.2013 - 11:33:58.477 INFO Starter - |Version: 1.3.0.9 |
19.04.2013 - 11:33:58.477 INFO Starter - |Status: beta |
19.04.2013 - 11:33:58.478 INFO Starter - |Starte: Server |
19.04.2013 - 11:33:58.478 INFO Starter - -------------------------
19.04.2013 - 11:33:58.545 ERROR LogLog - log4j:WARN No such property [maxFileSize] in org.apache.log4j.DailyRollingFileAppender.
19.04.2013 - 11:33:58.546 ERROR LogLog - log4j:WARN No such property [maxBackupIndex] in org.apache.log4j.DailyRollingFileAppender.

Schlimm oder nicht beachten?

Gruß