I have an event registration with three static arguments (nil, objectA,  
objectB). This event is triggered with a collection as the argument,  
making the call with arguments (collection,objectA,objectB).

The funny (well.... funny) thing is that if this just runs, it throws up.  
Something is messed up in WeakMessageSend>>valueWithArguments: so that the  
#perform:withArguments: in there is sent to the (dynamic) argument array,  
with selector being the intended recipient and argArray is messed up, it  
looks like there's even a methodContext in there (but with the wrong  
number of actual temps w.r.t. the selector name so that the method context  
won't print).

When single stepping, everything works like a charm. That makes it really  
strange...

This happens on my machine, on a colleague's machine, and also when I  
restart from my base image loading everything into it. I'm completely lost  
here - does anyone have an idea what this could be?