[MacRuby-devel] macruby NSTask problem

Hi I tried the subprocess sample with the AsyncHandler from http://ofps.oreilly.com/titles/9781449380373/_foundation.html and found the following problem: if I execute the code many times (I tried 20 times) in my terminal with $ macruby sample.rb then 2-3 times it does not print any output. In this 10% the data_ready: method of the AsyncHandler is not called. Is this a macruby problem or an NSTask problem? BTW using NSFileHandleReadToEndOfFileCompletionNotification instead of NSFileHandleReadCompletionNotification makes it even worse, in this case data_ready: is never called. I use the 2011.09.27 macruby 0.11 snapshot and mac os x 10.6.8 Alex.