[Serusers] Freeradius Authentication Problem

Hi, I am using ser 0.8.14 and FreeRadius 1.0.2 on a FreeBSD 5.3 system. When I try to authenticate using the auth_radius module, ser debug log reports failure, although freeradius debug says that an Access-Accept packet has been sent. Excerpts from both logs are appended. I am able to authenticate the same user using radclient. What could be wrong? Any help for solving this will be much appreciated. Nimal Ratnayake ser debug log ============= 0(43510) check_nonce(): comparing [424a8e7ce5e7651fa1c028c28d08e33d603fe2da] and [424a8e7ce5e7651fa1c028c28d08e33d603fe2da] 0(43510) res: -2 0(43510) radius_authorize_sterman(): Failure freeradius debug log ==================== auth: type "digest" Processing the authenticate section of radiusd.conf modcall: entering group authenticate for request 0 A1 = nimalr:pdn.ac.lk:xxxxxxx <- password changed by me A2 = REGISTER:sip:pdn.ac.lk KD = c054dd23cd7bcd4c70b75b4f447906cd:424a8e7ce5e7651fa1c028c28d08e33d603fe2da:4ea8a5db028bb11e4698dcaef8f4c6d9 modcall[authenticate]: module "digest" returns ok for request 0 modcall: group authenticate returns ok for request 0 Sending Access-Accept of id 253 to 127.0.0.1:60346