I have no idea why it happens but sometimes OSProcess resumes working after
doing a 

OSProcessAccessor initialize.

in a workspace.....

Hope this helps

HilaireFernandes wrote
> Hello,
> On Pharo4, when I type the command:
>       OSProcess waitForCommand: 'ls'
> it locks the image, I can get back control with [Alt]-.
> With the same image and VM, this command was previously working, even
> called from a Seaside component.
> Any idea?
> Thanks
> Hilaire
> -- 
> Dr. Geo
> http://drgeo.eu

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