MojoSetup doesn't recognize the suffix of filenames when there are any point inside the filename (eg. glest-data_3.2.1.tar). MojoSetup tries every single archive format until it finds the correct one. This takes a lot of time.
I'll attach a patch that enables MojoSetup to search a little bit harder to find the correct suffix.
Created attachment 1983 [details] Patch for MojoSetup slowdown on filenames with points