Hi, I'm running OpenSSH2.3.0 on Redhat 6.2 previously. After upgraded to OpenSSH2.5.1p2, I was unable to contect to external host via ssh. I got the following error message " xfree: NULL pointer given as argument". I try to regenerate the host key, but everytime I run keygen, I got a core dump. Anyidea whats went wrong? Rgds. ckthin