[Mono-list] Missing Method Exception

[dedi]

Hi guys,

Just want to ask about this error I got from installing dotnet blogengine:

System.MissingMethodException: Method not found:
'System.Web.Security.FormsAuthentication.get_Timeout'.
  at Account.Login.LoginUser_OnAuthenticate (System.Object sender,
System.Web.UI.WebControls.AuthenticateEventArgs e) [0x00000] in
<filename unknown>:0

Is that mean that mono doesn't support that method?
I used xsp4 and mono 2.10.2 on openSuSE.

Thank you.