cannot connect to listening socket

so... i am trying to make a dc++ hub software, but i have a little problem. when more people try to connect it says "connection refused" to some peoples... if i try to reconnect, it finally connects me after i retry a few times (sometimes one, sometimes 20)... i saw that the connection request event does not occur sometimes, even if the winsock is listening on that port!!! what can i do? i tried to listen on another port, and i had the same problem

post the code :)

so... this is the code:

VB Code:

Sub StartHub()
    PrintError Date & " " & Time & " -> Starting hub..."
    On Error GoTo Repara
    Dim Aux As String
    Dim NrWinsockListen As Byte
    Dim Aux2 As String
    NrWinsockListen = 0
    Aux = ""
    For i = 1 To wskListenExtra.Count - 1
        Unload wskListenExtra(i)
    Next
    If txtExtraListenPorts.Text <> "" Then: Aux = txtExtraListenPorts.Text & " "
    Do While InStr(Aux, " ") <> 0
        Aux2 = Mid$(Aux, 1, InStr(Aux, " ") - 1)
        If NrWinsockListen > 0 Then
            If wskListenExtra.Count <= NrWinsockListen Then: Load wskListenExtra(NrWinsockListen)
        End If
        wskListenExtra(NrWinsockListen).Close
        wskListenExtra(NrWinsockListen).LocalPort = Val(Aux2)
        wskListenExtra(NrWinsockListen).Listen
        Aux = Mid$(Aux, InStr(Aux, " ") + 1, Len(Aux))
        NrWinsockListen = NrWinsockListen + 1
    Loop
    UpDays = 0
    UpHours = 0
    UpMins = 0
    UpSecs = 0
    wskConnect(0).LocalPort = ListenPort
    wskConnect(0).Listen
    HubRunning = True
    cmdStartStopHub.Caption = "Stop Hub"
    StatusBar.Panels(1).Text = "Running..."
    Exit Sub
Repara:
    MsgBox Err.Description, vbOKOnly, "Error"
    Err.Clear
    Resume Next
End Sub
 
 
Private Sub wskConnect_ConnectionRequest(Index As Integer, ByVal requestID As Long)
    Dim i As Integer
    Dim NrWskGasit As Integer
    'if it is not the first winsock loaded
    If (wskConnect.Count - 1) > 0 Then
        For i = 1 To wskConnect.Count - 1
            If wskConnect(i).State <> 7 Then
                wskConnect(i).Close
                wskConnect(i).Accept requestID
                NrWskGasit = i
                GoTo Gasit
            End If
        Next
    'if it is the first user
    Else
        ReDim User(1)
        Load wskConnect(1)
        wskConnect(1).Accept requestID
        NrWskGasit = 1
        GoTo Gasit
    End If
    'if i haven't found a free winsock and i have to load a new one
    Load wskConnect(wskConnect.Count)
    ReDim Preserve User(wskConnect.Count - 1)
    wskConnect(wskConnect.Count - 1).Accept requestID
    NrWskGasit = wskConnect.Count - 1
 
Gasit:
    DoEvents
    If wskConnect(NrWskGasit).State = 7 Then: wskConnect(NrWskGasit).SendData "$Lock " & HubLock & " Pk=AneuHub10Beta|<" & HubSecurity & "> This Hub is running version 1.0 beta of AneuHub (RunTime:" & lblUptime.Caption & ").|" & "$Supports OpPlus NoGetINFO NoHello UserIP2|$HubName " & HubName & "|"
 
End Sub

the idea is that it listens... but the users cannot connect every time... i think it is a winsock bug, not my bug

any ideas??? i am completely stuck!!!