No, it fails same way on all my OSX versions from 10.5 to 10.7
Do you mean that you don't experience any difference resizing a Tk
window with worker thread started and without worker thread started?

On Wed, Feb 22, 2012 at 9:05 AM, KOSAKI Motohiro
<kosaki.motohiro / gmail.com> wrote:
> 2012/2/21 Grigory Petrov <grigory.v.p / gmail.com>:
>> Hello.
>>
>> I have failed to find any information on my problem, so maybe anyone
>> will claim 500 reputation award on stackoverflow by explaining why
>> Ruby hangs with GUI used alongside with background working thread
>> (this is a most common use case!):
>>
>> http://stackoverflow.com/questions/9063877/why-ruby-1-9-gui-hangs-if-i-do-any-intensive-computation-in-separate-ruby-thread
>
> Mac OS X Lion + 1.9.3p0 seems work. Windows specific issue?
>