Since I'm using 5.0 version (I used 4.5.8 in the past), I can't put a breakpoint in my Zimlet init function with Firebug anymore.
Zimbra add a parameter "&v=12011..." to JavaScript file URL, so Firebug see it as a new file after each Zimbra reload => My Firebug breakpoint doesn't exist anymore.

Is it possible to remove this "&v=..." parameter ? Or is there another way to put a breakpoint in Zimlet init function ?