andi wrote
I don't exactly know what is meant by second unzipping step
Not sure if it's a Windows thing or something to do with a specific software, but when I have a
tgz[/m] file, my extractor (7-Zip, on Win7) first extracts to a [m]tar file which you have to extract again. I guess that is what the OP meant.
But I just tried and everything is fine here as well (even tried downloading with IE in case that is different).