Faltava este arquivo no pb para linux...
PunkBuster (AA) Server Files
The following binary builds are only needed if your PunkBuster Server doesn't update by itself. Right click the appropriate link below and choose "save as" to your home "pb" folder (note home is "system\pb" or where fs_homepath points to in the game server's armyops.ini file) - make sure the file you save is saved with the filename shown below. Then issue an "admin pb_sv_restart" command to restart the PB Server with the new version. Players do not need any of these files, Server Admins only need the file that corresponds to their Operating System.
PB Server v1.739 for Linux Filename: pbsvnew.so - last updated 01/03/2009
nao sei se interfere mas estes dois seriam para players...
PunkBuster (AA) Player Client Files
The following files are only needed if your PunkBuster doesn't update by itself. Right click the appropriate links below and choose "save as" to your "system\pb\htm" folder - make sure the file you save is saved with the filename shown below. Players only need the files that correspond to their Operating System, Server Admins need all six files.
PB Client v2.182 for Linux Filename: lc002182.htm
PB ClientA v1371 for Linux Filename: la001371.htm