This may or may not have something to do with the cascading observers interface
in the core. I have not determined that yet.

To test:

Run FryskGui

Select a process in the process list, right click and add an observer (Fork maybe).

Select the same process in the process list, right click and add another
observers (Exec Maybe). A Frysk core dialog will popup showing the following:

Frysk Core has reported the following errors

{frysk.proc.LinuxProc@58c5140,pid=947,state=running} in state "running" did not
handle handleAddTasksObserver

frysk.proc.State.unhandled (FryskGui)
frysk.proc.ProcState.handleAddTasksObserver (FryskGui)
frysk.proc.Proc$8.execute (FryskGui)
frysk.event.EventLoop.runEventLoop (FryskGui)
frysk.event.EventLoop.run (FryskGui)
frysk.gui.Gui$3.run (FryskGui)
java.lang.Thread.run (libgcj.so.7)