I've download, unzip, install and use Justice, Dirtybag and Dirty Headline without problem.
indextwo ha detto 
I assumed it might be an issue with my Vista system.
For me, it seems to be a problem of download.
Menhir ha detto 
For me, it seems to be a problem of download.
Hence why I said:
indextwo ha detto 
As an experiment I tried re-downloading the .zip for Justice via Firefox, and it worked perfectly. It seems the issue is downloading via IE7... and IE8.
I'm not sure if these .zip files are generated dynamically (I wouldn't have thought so), but it looks like it's a browser-specific issue.
To download on DaFont, I use IE6 and IE8 and I've no problem.
Perhaps it's something in your parameters or your temps file. Try to erase the tempory files ans coockies.
Fuso orario: CEST. Ora sono le 18:30