rhel5 x86-64 2.6.18-8.1.6.el5 freeradius 1.1.6 ntlm authentication to windows AD server. Dec 16 15:50:13 ion winbindd[18013]: rpc_api_pipe: Remote machine activedirectoryserver.clarku.edu pipe \NETLOGON fnum 0xc003returned critical error. Error was Call timed out: server did not respond after 10000 milliseconds Dec 16 18:03:58 ion kernel: radiusd[17644] general protection rip:2aaaac1666d5 rsp:7fff600f93f0 error:0 Any chance these are related, (i know the times are far apart, however our radius server is very slow on the weekends, as well as over winter break which we are currently) i could actually imagine going an hour or even two without any authentication attempts. -- Joe Vieira UNIX Systems Administrator Clark University - ITS