On 7/13/2010 6:39 AM, Rob Withers wrote:
> The low-space watcher is running, at least before the problem starts. I
> do eventually run out of memory, but the uninterruptable state happens
> before this.

In which case you want to do the following:
* Launch your app and wait until it's in the "growing state"
* Hit F2 and from the VM's preference menu choose "Debug" and then 
"Print all processes"

This will dump a list of all the call stacks of all processes. One of 
them is the culprit consuming memory and you'll probably be able to tell 
quickly from just looking at it (if not, you can email the output here 
but it typically takes a domain expert to understand what's going wrong).

Cheers,
   - Andreas