Hi,
we had the same issue. This happens if there was a complex GUI having
many widgets because IE is...ah, you know about this. :-)
We solved this problem with partial disposing. So you´ve got to
reorganize your destruction logic and perform a clean-up stepwise. After
each step you have to give the control back to the browser like this:
 
setTimeout(
  (function() {
    var doContinue  = true;
    // do one of the destructions / clean-up steps
   ...
   if (doContinue) {
    setTimeout(arguments.calle, 10);
   }          
}), 10);
 
HTH,
Rob.

>>> Cajus Pollmeier <[email protected]> 2/3/2011 3:00 >>>
Hi all,

I ran into problems with qooxdoo 1.3 recently, where it seems to take
to long 
for IE to run destructors and whatever needed to shut down an
application 
after the users just closes the application window.

Almost everytime, I get the message that (freely translated from
german):

"A script on this page is causing IE to run slowly. If it continues to
run, 
your computer may be unresponsive."

Just looks like a timeout in IE which can be configured, but are there
general 
hints on "how to shutdown an application fast enough"?

Cheers,
Cajus

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