Disconnected / Closed Connection unexpectedly.

[sky202_how89]

Hi, some problems here. I'm running a small hub with 200~250 users per day. What I have discovered, users are complaining of disconnected for several times from hub. What I discovered I get this deflood messages. I have tried both PtokaX 0.4.1.1 and 0.4.1.2 but the problems are kept repeating.
Can anyone help? I'm glad for your assistance.

P/S:
I'm running the hub in off-campus. Every residents have an external IP and Internal IP. Their Internal IPs can be seen by owner.
The problem is Only Same Block users won't get disconnected from External Block users are kept disconnected.
Message from client may received from mainchat: An existing connection was forcibly closed by the remote host.
These are the commands I get from PtokaX.

[16:30] x User removed:  (Socket 2368)
[16:30] x User removed:  (Socket 2568)
[16:30] x User removed:  (Socket 1544)
[16:30] x User removed:  (Socket 2356)
[16:30] x User removed:  (Socket 2968)
[16:30] x User removed:  (Socket 2388)
[16:30] x User removed:  (Socket 740)
[16:30] x User removed:  (Socket 1416)
[16:30] x User removed:  (Socket 1460)
[16:30] x User removed:  (Socket 1444)
[16:30] x User removed:  (Socket 1920)
[16:30] x User removed:  (Socket 2616)
[16:30] x User removed:  (Socket 2020)
[16:30] x User removed:  (Socket 3100)
[16:30] x User removed:  (Socket 2208)
[16:30] x User removed:  (Socket 1324)
[16:30] x User removed:  (Socket 764)
[16:30] x User removed:  (Socket 1552)
[16:30] x User removed:  (Socket 2328)
[16:30] x User removed:  (Socket 1128)
[16:30] x User removed:  (Socket 2540)
[16:30] x User removed:  (Socket 1972)
[16:30] x User removed:  (Socket 1320)
[16:30] x User removed:  (Socket 456)
[16:30] x User removed:  (Socket 2324)
[16:30] x User removed:  (Socket 704)
[16:30] x User removed:  (Socket 1904)
[16:30] x User removed:  (Socket 332)

[16:45] Alicia (xx.x.xx.xx) > $ConnectToMe %L% xx.x.xx.xx:5708|
[16:45] sheepsheep (xx.x.xx.xx) > $ConnectToMe ClickM3 xx.x.xx.xx:31848|
[16:45] stooge (xx.x.xx.xx) > $Version 1,0091|
[16:45] stooge (xx.x.xx.xx) > $GetNickList|
[16:45] stooge (xx.x.xx.xx) > $MyINFO $ALL stooge <StrgDC++ V:2.12,M:A,H:3/0/0,S:3>$ $0.005
$$25899682666$|
[16:45] LAU (xx.x.xx.xx) > $Search xx.x.xx.xx:8808 F?T?0?9?TTH:KWH3VUZN3GZ3EX6MZ33JES236SPUDLMSJR7YPEI|
[16:45] Heartbeat (xx.x.xx.xx) > $ConnectToMe luvluvluv xx.x.xx.xx:62701|
[16:45] blahblah (xx.x.xx.xx) > $ConnectToMe BEyan xx.x.xx.xx:7549|
[16:45] Noodles (xx.x.xx.xx) > $RevConnectToMe Noodles luvluvluv|
[16:45] Noodles (xx.x.xx.xx) > $RevConnectToMe Noodles shaunGenius|
[16:45] abcdefg (xx.x.xx.xx) > $Search Hub:abcdefg F?T?0?9?TTH:256X4B7IFG6IWQ7Z4ZEZ4OM7BZAFX5ON45SVWYQ|
[16:45] Star (xx.x.xx.xx) > $RevConnectToMe Star Yankee|
[16:45] Tencent (xx.x.xx.xx) > $Search xx.x.xx.xx:7955 F?T?0?9?TTH:MVNCPMQTP4BZASNJF5GCIDCGK2ZSCPVJ6NXQNTQ|
[16:45] luvluvluv (xx.x.xx.xx) > $ConnectToMe Noodles xx.x.xx.xx:65184|
[16:45] x User removed: paparazzi (Socket 1264)
[16:45] x User removed: Shan (Socket 2104)
[16:45] x User removed: Yankee (Socket 2268)
[16:45] x User removed: niyyy (Socket 1240)
[16:45] x User removed: wann (Socket 1800)
[16:45] x User removed: KeyRoar (Socket 2044)
[16:45] x User removed: lolz (Socket 872)

[PPK]

Use UDP-Debug Receiver to get more info http://forum.ptokax.org/index.php?topic=6399.0  :