Arnon, be brave & tell them (if you are not a Lawyer) that you do not understand items 1&2 & would they explain. I am not a Lawyer but I would hesitate, like you, before signing. Looks like a cop-out. They are basically washing their hands of owing you any money. I can see that items 1&2 could be applied to ANY scenario. Put yourself in any scenario where you think you might want money from them (EVERYTHING arises out of YOUR perfomance & DUTY) & you will see that items 1&2 (or 1 OR 2) could readily be applied.