Hi, I'm using logback 0.9.21. Unfortunately it prints all messages to single line, there is no end of line character, even wrong one. I've got the pattern set right AFAIK: <pattern>%d{HH:mm:ss.SSS} %-5level %class (%thread) [%logger{36}] -- %msg%n</pattern> I run it on Windows 7 at the time. Thanks for any hint, R.Matl