With 1.3.x I can make a jsonp call to the same IIS server as long as the app resides in a different virtual directory. The following URL is generated:

http://server/virtual_directory/WebService.asmx/Method?callback=jsonp1267225277495&_=1267225283975&userID=555&firstItem=0&pageSize=5

However with 1.4.x a slightly different URL is generated and an error is returned:

http://server/virtual_directory/WebService.asmx/Method.asmx/GetItemStatusByUser?callback=jsonp1267225549547&userID=555&firstItem=0&pageSize=5

[InvalidOperationException: Request format is unrecognized for URL unexpectedly ending in '/Method'.]
   System.Web.Services.Protocols.WebServiceHandlerFactory.CoreGetHandler(Type type, HttpContext context, HttpRequest request, HttpResponse response) +405961
   System.Web.Services.Protocols.WebServiceHandlerFactory.GetHandler(HttpContext context, String verb, String url, String filePath) +212
   System.Web.Script.Services.ScriptHandlerFactory.GetHandler(HttpContext context, String requestType, String url, String pathTranslated) +47
   System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +193
   System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +93
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

Does anyone know if this change in behavior by design?