Ah, I still had one of those bad archives left. So I could see that the file size differed.
The bad .tar.gz was 182.056 bytes The good 191.865 And after unzipping the corrupt file I got a .tar file of size 191.865 ! gzipped twice? Well, I renamed the unzipped corrupt .tar file to .tar.gz And now things worked well. unzipping THIS file resulted in a .tar file that could be extracted. So - however it happend - the "corrupt" file had been gzipped twice. At least a partly explanation to this mystery :) /Leif
