windows CardSpace Service event 269

Event 269, CardSpace 3.0.0.0
The windows cardspace service is too busy to process this request. User has too many outstanding requests.

Additional information:
 at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
 at System.Environment.get_StackTrace()
 at Microsoft.InfoCards.Diagnostics.InfoCardTrace.BuildMessage(InfoCardBaseException ie)
 at Microsoft.InfoCards.Diagnostics.InfoCardTrace.TraceAndLogException(Exception e)
 at Microsoft.InfoCards.Diagnostics.InfoCardTrace.ThrowHelperError(Exception e)
 at Microsoft.InfoCards.UIAgentMonitor.AddNewClient(UIAgentMonitorHandle handle)
 at Microsoft.InfoCards.UIAgentMonitorHandle.CreateAgent(Int32 callerPid, WindowsIdentity callerIdentity, Int32 tsSessionId)
 at Microsoft.InfoCards.RequestFactory.CreateClientRequestInstance(UIAgentMonitorHandle monitorHandle, String reqName, IntPtr rpcHandle, Stream inStream, Stream outStream)

Log name : Application
Event id : 269
Task Category : ServiceAuthorization
keywords : classic