O_o I reported a bug at bugzilla related to m2e: https://bugs.eclipse.org/bugs/show_bug.cgi?id=362418 As I see this mail I am wondering if this is the same cause. Maybe my command line uses another jdk (1.6) and thus it works perfect. I know that my eclipse is using a 1.7 jdk. I will give it a try.
Very nice, thanks.