I have the same problem. I'm running archlinux and have tried downloading this from
3 different places... all get the same result:
[root@woogie et]# sh et-linux-2.55.x86.run
Verifying archive integrity... All good.
Uncompressing Enemy Territory 2.55........................
........................................................................
........................................................................
........................................................................
.......................................................Extraction failed.
Signal caught, cleaning up
[root@woogie et]# ls -al et-linux-2.55.x86.run
-rwxrwxrwx 1 vidberg users 270588258 2005-03-19 23:18 et-linux-2.55.x86.run