I'm using the SysLog appender and it works well.

But I've problems with line breaks, especially for exceptions. Every strack trace line is written as new SysLog-Entry. Example:

Aug 11 20:25:21 192.168.33.11 app2-cas org.osgi.framework.BundleException: The bundle class path entry "patch.jar"..."
Aug 11 20:25:21 192.168.33.11 app2-cas ^Iat org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassPathEntry(ClasspathManager.java:168)
Aug 11 20:25:21 192.168.33.11 app2-cas ^Iat org.eclipse.osgi.baseadaptor.loader.ClasspathManager.buildClasspath(ClasspathManager.java:145)
Aug 11 20:25:21 192.168.33.11 app2-cas ^Iat org.eclipse.osgi.baseadaptor.loader.ClasspathManager.initialize(ClasspathManager.java:79)
...

That's quire annoying if you want to filter or highlight entries.

I think it's major, because there isn't a good workaround to filter/highlight syslog files.
I'm using Logback 0.9.13, but I thinks it still exists in the trunk.