I know I'm late in on this thread, but I thought I'd throw in my views. I'd like to see the REQUEST be flat plain aborted when someone hits the stop button or the connection dies. I don't is the is context.REQUEST.RESPONSE.isClientConnected() really working. How would I plug this in an expensive SQL SELECT/JOIN? Why do we need this extra programming overhead? As for the long running administrative tasks, I actually see the ability to bugger off and leave them running as an extremely bad thing. Say I hit 'pack' on a big fat ZODB. I then go somewhere else. How do I now tell when its done? The only was would be to go and look at 'top' and guess which python thread is doing the pack and wait till its CPU usage drops to zero. That's pretty ropey ;-) For the same reason, I hate ZEO's pack's possibility of returning before a pack is finished. If you do a pack, I really think you should wait for the browser to return. If the browser times out, then use something like wget. If I hit 'stop', the pack should abort. As a parting example, what happens if I accidentally start a pack? How can I stop it? ;-) cheers, Chris