System.Security.SecurityException: Request for the permission of type System.Security.Permissions.SecurityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed.

Hi everyone,I my project is in ASP.Net2.0 using C#.I have used ajax in my project.and I have hosted my site on godaddy.now i faced below error on those pages where i used script manager.
System.Security.SecurityException: Request for the permission of type
System.Security.Permissions.SecurityPermission, mscorlib,
Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
failed.
I have given all permission to every folder.but still same problem.I also used
  <system.web>

    <trust level="Medium" />

  </system.web>
but no solution.i have also used below code:
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")]
but still again same problem.
Any moderator plz help me.
DJ

 
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