Is it right as per provision of GPL, to release source code under GPL and binary as nonGPL. This is the case of `Qcad', a 2-D CAD package. Its version 1.xx was GPL for Linux and nonGPL for MS-window.
With 2.xx version, they say, source is under GPL and on their web-site demo versions are there for Linux as well as for MS-windows, which terminate after every 10 minutes.
Then what sort of GPL is it for source code?