Hi Bob, a tip that may help you.

When you experience lock ups hit ALT+. (dot). It will interrupt the 
currently executing operation on the GUI thread.  It's not that Squeak 
is blocking but the GUI process. When that happens the interrupt key 
will help you to figure out where the block happened, fix it and save 
your work. Nevertheless is good policy to treat your images as 
disposable and to save them frecuently :)

Regards,
Hernán

Bob.Cowdery at CGI-Europe.com wrote:
> Ok - I admit I don't know what I am doing but then that's always the 
> best way to break something. Is Squeak that flaky or am I just being 
> really unlucky? I have to say I have had more lock-ups in the short time 
> I have been using Squeak than in any other language system I have used. 
> Quite a few in Morphic but the last one simply doing this:
> 
>  
> 
> x := SequenceableCollection new, then try to print x. Lock-up + 100% 
> CPU. The only response is from the main window, quit without saving then 
> kill squeak as it's still running.
> 
>  
> 
> I was simply trying to understand why forceTo: paddingStartWith: didn't 
> work if the length was more than the original string. What I wanted to 
> do was add a calculated number of padding '0' characters in front of my 
> string. I was using a base class method because padded: to: with: also 
> didn't work if to: was greater than the string length. I must be reading 
> these completely wrong somehow. Can someone restore my confidence please.
> 
>  
> 
> Bob
> 
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