> This might happen if you run out of memory.  Does it lock up while you
> are using it, or while it is idle?
> 
> You can increase the memory using the -memory flag or the SQUEAK_MEMORY
> environment variable.  (I increased the default on the SourceForge VM,
> because I seemed to not have a single image that could run happily in
> the old default.)

I have been running Squeak with 40mB allocated.  The weird thing is, that when it does lock up, it's usually within a minute of startup.  If it lasts longer than that it's fine.

It may be linked to having the refactoring browser installed, although that may not be relevant.

I'm now trying it without the refactoring browser and I'll up the memory a bit more.

peter