This person has obviously never tried to use a Java SWING app (which is what most of them are written in) on even a moderately fast processor (my laptop's Duron 900, for instance) with a decent amount of RAM (256MB).

The SWING/Java combination is incredibly slow and unresponsive...try it yourself if you don't believe me.

The reason most programs are written using C/C++ is for _that very reason_. You won't see any serious GUI applications written in a scripting language, because GUI (whether you realize it or not) is very demanding on a system as compared to console (or even web) applications.

If I need something quick and dirty (and didn't care about responsiveness), I'd probably use Perl/Tk. But for everything else, C++/Qt is the way to go IMO. True, it's somewhat bloated, but it's also responsive, and has a very nice and full-featured API.

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