May I ask which distro and version you are running umbloaded? I have seen similar (on Debian Sid) and thought it was probably a race condition which the system corrected by either swapping the order things ran or delaying one.
Edit: Sorry I was being slow. It is probably exactly what it says it is: a recursion (script or process calling itself) which the system detected and fixed.
Last edited by 273; 06-18-2013 at 04:42 AM.