Logged In: YES 
user_id=718263

more examples: 
 
ftp://ftp.porcupine.org/pub/security/portmap_5beta.tar.gz 
ftp://ftp.porcupine.org/pub/security/tcp_wrappers_7.6.tar.gz 
 
additionally, the same problem appearing when trying to extract 
these archives with the "ark" (yet another kde tool, just a simple 
front-end for the tar command. interesting, isn't it). 
 
 
Ciao.