Hi, I'm trying to run the trunk of xrootd from /opt/xrootd while keeping the standard installation in /usr/lib64 (GNU/Linux, CentOS-5, x86_64). I'm setting LD_LIBRARY_PATH correctly (after sudo), but the libs are still getting pulled in from /usr/lib64 ... so I get: 110524 17:34:00 001 XrootdConfig: /usr/lib64/libXrdSec.so: undefined symbol: _ZN9XrdNetDNS11getHostNameEPKcPPc opening shared library /usr/lib64/libXrdSec.so Should setting LD_LIBRARY_PATH be sufficient? Cheers, Matevz