HELP!!! Error: rlm_eap: SSL error

what's wrong? Help! Tue Nov 29 17:14:00 2011 : Auth: Login incorrect: [host/dbu14/<via Auth-Type = EAP>] (from client private-network port 123 cli 00-0E-A6-B4-43-99) Tue Nov 29 17:16:02 2011 : Error: --> verify error:num=10:certificate has expired Tue Nov 29 17:16:02 2011 : Error: TLS Alert write:fatal:certificate expired Tue Nov 29 17:16:02 2011 : Error: TLS_accept:error in SSLv3 read client certificate B Tue Nov 29 17:16:02 2011 : Error: rlm_eap: SSL error error:140890B2:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:no certificate returned