Hi!
I try to run sample comming with WSE 3.0 installation package  
(WSSecurityKerberosPolicyService.sln),
but I receive exception:

Calling  
http://localhost/WSSecurityKerberosPolicy/WSSecurityKerberosService.asmx

****** Exception Raised ******
<?xml version="1.0" encoding="utf-8"?><soap:Envelope  
xmlns:wsa="http://schemas.x
mlsoap.org/ws/2004/08/addressing"  
xmlns:soap="http://schemas.xmlsoap.org/soap/en
velope/"><soap:Header><wsa:Action>http://schemas.xmlsoap.org/ws/2004/08/addressi
ng/fault</wsa:Action><wsa:MessageID>urn:uuid:44e53ef8-cb66-4860-b2fb-21200189324
e</wsa:MessageID><wsa:RelatesTo>urn:uuid:b63711f0-8d3d-4fce-bb5e-70ea70599612</w
sa:RelatesTo><wsa:To>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anony
mous</wsa:To></soap:Header><soap:Body><soap:Fault><faultcode>soap:Server</faultc
ode><faultstring>Server unavailable, please try  
later</faultstring><faultactor>h
ttp://localhost/WSSecurityKerberosPolicy/WSSecurityKerberosService.asmx</faultac
tor></soap:Fault></soap:Body></soap:Envelope>
Microsoft.Web.Services3.ResponseProcessingException: WSE910: An error  
happened d
uring the processing of a response message, and you can find the error in  
the in
ner exception.  You can also find the response message in the Response  
property.
 ---> System.InvalidOperationException: Security requirements are not  
satisfied
because the security header is not present in the incoming message.
   at  
Microsoft.Web.Services3.Security.SecureConversationClientReceiveSecurityFi
lter.ValidateMessageSecurity(SoapEnvelope envelope, Security security)
   at  
Microsoft.Web.Services3.Security.ReceiveSecurityFilter.ProcessMessage(Soap
Envelope envelope)
[...]

In my EventLog there is a error message:

An error occured processing an outgoing fault response.

Details of the error causing the processing failure:
System.InvalidOperationException: Send security filter on the server could  
not retrieve the operation protection requirements from the operation  
state.
   at  
Microsoft.Web.Services3.Security.SecureConversationServiceSendSecurityFilter.SecureMessage(SoapEnvelope  
envelope, Security security)
   at  
Microsoft.Web.Services3.Security.SendSecurityFilter.ProcessMessage(SoapEnvelope  
envelope)
   at Microsoft.Web.Services3.Pipeline.ProcessOutputMessage(SoapEnvelope  
envelope)
   at  
Microsoft.Web.Services3.WseProtocol.GetFilteredResponseEnvelope(SoapEnvelope  
outputEnvelope)

The SOAP fault that was being processed follows:
<soap:Envelope  
xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing"  
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Header>
        <wsa:Action>http://schemas.xmlsoap.org/ws/2004/08/addressing/fault</wsa:Action>
        <wsa:MessageID>urn:uuid:0997f1ff-9705-43d1-8c55-3fdf3b23b257</wsa:MessageID>
        <wsa:RelatesTo>urn:uuid:b63711f0-8d3d-4fce-bb5e-70ea70599612</wsa:RelatesTo>
        <wsa:To>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:To>
    </soap:Header>
    <soap:Body>
        <soap:Fault>
            <faultcode  
xmlns:prefix0="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xs
d">prefix0:InvalidSecurityToken</faultcode>
            <faultstring>Microsoft.Web.Services3.Security.SecurityFault:  
An invalid security token was provided ---&gt;  
System.Security.SecurityException: The Kerberos credential handle could  
not be acquired. The AcquireCredentialsHandle call returned the following  
error code: Nie ma obecnie serwerów logowania dostępnych do obsługi  
żądania logowania. (in English error message is: There is no avilable  
login server for login request)

I replace targetPrincipal attribute with my data:  
targetPrincipal="host/N1054" (my computer name).

WebService and client app works on my computer (named N1054 - Windows XP  
Prof, SP 2)
- computer is in domain.

Best regards

Pawel