log4j config under eclipse 3

under eclipse, log4j can't find its config in my property file (not from JNode).
Since I know log4j, I have always put some lines of code and I works.

But now, with JNode projects sometime it works sometime it doesn't work (without modifying config) !

Do you know how to configure properly log4j under eclipse ?

I added the file to the classpath

I added the file to the classpath of JNode-FS and it works.

There is no need to modify JNode source code or to specify a system property.