ScriptProccessor events are stopping atfer a short while

I may be doing something wrong here, it's been a while since i created a
script-processor node, but my event-handler for a scriptprocessor seems to
stop firing pretty quickly.

Fiddle here: http://jsfiddle.net/7LZAJ/

Strangely, the fiddle sometimes runs fine the first time, but when i
refresh after that it does what happens locally here as well: the
eventhandler does not get called anymore (and the remaining noisebuffer is
repeated). The writing of the noise into the buffer has nothing to do with
it, if my eventhandler only  logs something to the console it will just
stop shortly after starting (always after the same number of repetitions).

Am i overlooking something?


Peter