FWIW, if I try this in the 4.2 all-in-one, the first CMD-period does 
nothing. The second CMD-period brings up two debuggers, one for the 
factorial and one for WeakArray class>>finalizationProcess. Similar sort 
of behavior if I use a CogMT from August rather than the VM included in 
the all-in-one. If I dismiss the WeakArray debugger (and, thus, no 
finalization process), then CMD-period works as expected. MacOS 10.5

Cheers,
Bob

On 12/14/11 3:07 AM, Andreas Raab wrote:
> On 12/13/2011 23:30, Eliot Miranda wrote:
>>
>>
>> On Tue, Dec 13, 2011 at 1:36 PM, Lawson English <lenglish5 at cox.net 
>> <mailto:lenglish5 at cox.net>> wrote:
>>
>>     That sounds really great.
>>
>>     However, there are some broken bits in Squeak that will make
>>     learning Smalltalk difficult.
>>
>>     Most simple and important example I have right now is the
>>     well-known issue that the VM will freeze indefinitely if you
>>     input a long running calculation, e.g. x := 100000 factorial. The
>>     interrupt key doesn't work, usually.  Newbies like me, like to
>>     experiment, and if the VM freezes with every typo, then its
>>     hardly worth using.
>>
>>
>> This is interesting because it does *not* freeze in my Qwaq-derived 
>> work image.  Here the interrupt key works perfectly with no delay. 
>>  I'll see if I can investigate.  Andreas, do you recall doing 
>> anything to the debugger to fix issues like this in the Qwaq system?
>
> Nothing I can recall. Also, when I try interrupting 100000 factorial 
> in a 4.2 image with either a Teleplace or OpenQwaq VM I have no 
> trouble interrupting anything. So it doesn't look like it's an issue 
> in the image that is causing it. Wonder if there's anything changed in 
> the support code perhaps...
>
> Cheers,
>   - Andreas
>
>
>
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