Hello Arran: Here is a stop request at the bottom of that debug information. And something more confusing, I used the user name "snan4love" log in my system for hundreds time, there is only one time, I get the currect response with Acct-Input-Octets and Acct-Output-Octets . Here is the log information: This is the only time ,i get the correct data, at the STOP request, the username changed. Thu Sep 22 15:35:18 2011 Acct-Session-Id = "386D4387-00000008" Acct-Status-Type = Start Acct-Authentic = RADIUS User-Name = "snan4love" NAS-IP-Address = 192.168.0.143 NAS-Identifier = "AP" NAS-Port = 0 Called-Station-Id = "00-80-48-6E-1A-87:143" Calling-Station-Id = "00-1E-65-50-D4-EA" NAS-Port-Type = Wireless-802.11 Connect-Info = "CONNECT 11Mbps 802.11b" Acct-Unique-Session-Id = "f6139abfb9132394" Timestamp = 1316676918 Thu Sep 22 15:37:11 2011 Acct-Session-Id = "386D4387-00000008" Acct-Status-Type = Stop Acct-Authentic = RADIUS User-Name = "host/20101022-1029" NAS-IP-Address = 192.168.0.143 NAS-Identifier = "AP" NAS-Port = 0 Called-Station-Id = "00-80-48-6E-1A-87:143" Calling-Station-Id = "00-1E-65-50-D4-EA" NAS-Port-Type = Wireless-802.11 Connect-Info = "CONNECT 11Mbps 802.11b" Acct-Session-Time = 113 Acct-Input-Packets = 81 Acct-Output-Packets = 7 Acct-Input-Octets = 3036 Acct-Output-Octets = 2290 Event-Timestamp = "Jan 1 2000 14:13:47 CST" Acct-Unique-Session-Id = "a1815b5b9e77a40d" Timestamp = 1316677031 The following is the normal no Acct-Output(Input)-Octets log: Thu Sep 22 15:39:11 2011 Acct-Session-Id = "386D4387-0000000B" Acct-Status-Type = Start Acct-Authentic = RADIUS User-Name = "snan4love" NAS-IP-Address = 192.168.0.143 NAS-Identifier = "AP" NAS-Port = 0 Called-Station-Id = "00-80-48-6E-1A-87:143" Calling-Station-Id = "00-1E-65-50-D4-EA" NAS-Port-Type = Wireless-802.11 Connect-Info = "CONNECT 11Mbps 802.11b" Acct-Unique-Session-Id = "02a52d5fc2ac00e6" Timestamp = 1316677151 Thu Sep 22 15:39:22 2011 Acct-Session-Id = "386D4387-0000000B" Acct-Status-Type = Stop Acct-Authentic = RADIUS User-Name = "snan4love" NAS-IP-Address = 192.168.0.143 NAS-Identifier = "AP" NAS-Port = 0 Called-Station-Id = "00-80-48-6E-1A-87:143" Calling-Station-Id = "00-1E-65-50-D4-EA" NAS-Port-Type = Wireless-802.11 Connect-Info = "CONNECT 11Mbps 802.11b" Acct-Session-Time = 11 Event-Timestamp = "Jan 1 2000 14:15:58 CST" Acct-Terminate-Cause = User-Request Acct-Unique-Session-Id = "02a52d5fc2ac00e6" Timestamp = 1316677162 -- View this message in context: http://freeradius.1045715.n5.nabble.com/Problem-expand-Acct-Input-Gigawords-... Sent from the FreeRadius - User mailing list archive at Nabble.com.