Those messages only show if at least one of the following is true:
- you have debugging enabled in the logback.xml file
- you have an error in your configuration. That is the case here – logback complains about multiple configuration files found.
- there is a classpath problem if your environment provides conflicting files. (this one occurred to me yesterday and was the real cause of this question).
- (there is a bug in logback – has happened)
Correct the issue and those messages should go away.