2.55+ patch (2.6b and 2.55 backwards compatibility) problem

[carnage]

I have run into a problem while trying to patch my server with 2.55+:

Debian-50-lenny-64-LAMP:/home# ./et-linux-2.55.x86.run 
Verifying archive integrity... All good. 
Uncompressing Enemy Territory 2.55...........................................................................................................................................................................................................................................................................................................
This installation doesn't support glibc-2.0 on Linux / unknown 
(tried to run setup) 
See http://zerowing.idsoftware.com/linux/ for troubleshooting 
The setup program seems to have failed on unknown/glibc-2.0 

See http://zerowing.idsoftware.com/linux/ for troubleshooting

Then I tried to install this pack:

Debian-50-lenny-64-LAMP:/home# apt-get install glibc-2.0 
Reading package lists... Done 
Building dependency tree 
Reading state information... Done 
E: Couldn't find package glibc-2.0

Then i found a 2.55 folder (I don't know if these are the right files or not), copy pasted them into test server, and I got this error:

Sys_LoadDll(/home/silent255/enemy-territory//silent/qagame.mp.i386.so)... 
Sys_LoadDll(/home/silent255/enemy-territory//silent/qagame.mp.i386.so) failed: 
"liblua5.1.so: cannot open shared object file: No such file or directory" 
Sys_LoadDll(/home/silent255/enemy-territory/silent/qagame.mp.i386.so)... 
Sys_LoadDll(/home/silent255/enemy-territory/silent/qagame.mp.i386.so) failed: 
"liblua5.1.so: cannot open shared object file: No such file or directory" 
Sys_LoadDll(qagame) failed dlopen() completely! 
----- Server Shutdown -----

Perhaps I just don't get how this stuff works. Could anyone explain it better?

This is the server: http://et.trackbase.net/index.php?mo...info&idx=20489
ET 2.6b, silEnT 0.4.0.rc1.