I just installer RedHat 5.2/Intel and use the satndard window manager (AnotherLevel). Everything is OK except that after a while the buttons on top of each frame (minimize, etc on the right hand side) stops working. Also the Redhat button on left hand side does not show the menu. It does not help to restart fvwm2.
This seems to be exactly the behavior expected when the NumLock key is on. If it is not the case, please re-open the bug.