Hi, I've just downloaded,compiled and installed the latest version of 2.2 (2.2.1?) from git.freeradius.org. Installed it on an internal server and things seemed to work o.k. I then upgraded another server that deals with our external ( eduroam) connectivity and within a few mins am seeing Thu Mar 7 10:25:58 2013 : Error: WARNING: Unresponsive child for request 16, in component <core> module <thread> Thu Mar 7 10:25:59 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:26:00 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:26:03 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:26:06 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:26:11 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:26:16 2013 : Auth: Login OK: [lw09ea@leeds.ac.uk] (from client nasaaa2 port 0 cli 40-A6-D9-B9-A8-A6) Thu Mar 7 10:26:19 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:26:26 2013 : Auth: Login OK: [zszz5238@kclad.ds.kcl.ac.uk] (from client nasaaa2 port 0 cli 58-1F-AA-53-87-B4) Thu Mar 7 10:26:30 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:26:47 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:27:13 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:27:29 2013 : Auth: Login OK: [nagios@york.ac.uk] (from client systems0 port 0) Thu Mar 7 10:27:51 2013 : Info: WARNING: Child is hung for request 16 in component <core> module <thread>. Thu Mar 7 10:28:18 2013 : Error: Discarding duplicate request from client nasaaa2 port 1814 - ID: 255 due to unfinished request 88 Thu Mar 7 10:28:24 2013 : Error: Discarding duplicate request from client nasaaa2 port 1814 - ID: 255 due to unfinished request 88 Thu Mar 7 10:29:04 2013 : Error: WARNING: Unresponsive child for request 88, in component <core> module <thread> Thu Mar 7 10:29:05 2013 : Info: WARNING: Child is hung for request 88 in component <core> module <thread>. Thu Mar 7 10:29:06 2013 : Info: WARNING: Child is hung for request 88 in component <core> module <thread>. Thu Mar 7 10:29:08 2013 : Info: WARNING: Child is hung for request 88 in component <core> module <thread>. Thu Mar 7 10:29:12 2013 : Info: WARNING: Child is hung for request 88 in component <core> module <thread>. Thu Mar 7 10:29:17 2013 : Info: WARNING: Child is hung for request 88 in component <core> module <thread>. Thu Mar 7 10:29:25 2013 : Info: WARNING: Child is hung for request 88 in component <core> module <thread>. Thu Mar 7 10:29:36 2013 : Info: WARNING: Child is hung for request 88 in component <core> module <thread>. The server is basically proxying off auth requests to remote RADIUS servers. Is the above just telling me that the other end is taking a while to reply or is there some underlying issue? Rgds A