Fellows I don't know how you guys are getting around; but I finally figured out the issue with some help from one of the guru's on other forum and thought I should share my findings that fixed the issue, There are two things that need to be done, both are listed below (scroll to the bttom for second). Once these changes are done, hit your server again and everything starts to fly 
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Apologies if I mislead and there is better way to fix the issue; but this seemed to be working consistently on 5 times consecutivfely; thought might help others.
1) Open the App_Code\Global.asax.vb and paste the following code [ This code has been pulled over from DNN 4.7 App_Code\Global.asax.vb ] between the lines
Between Lines -
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Public Class [Global]
Inherits System.Web.HttpApplication
<<Paste the below code>>
#Region "Application Event Handlers"
----------------------------------------------------------------------
#Region "Private Methods"
''' -----------------------------------------------------------------------------
''' <summary>
''' CheckVersion determines whether the App is synchronized with the DB
''' </summary>
''' <remarks>
''' </remarks>
''' <history>
''' [cnurse] 2/17/2005 created
''' </history>
''' -----------------------------------------------------------------------------
Private Sub CheckVersion()
Dim Server As HttpServerUtility = HttpContext.Current.Server
Dim Request As HttpRequest = HttpContext.Current.Request
Dim Response As HttpResponse = HttpContext.Current.Response
Dim AutoUpgrade As Boolean
If Config.GetSetting("AutoUpgrade") Is Nothing Then
AutoUpgrade = True
Else
AutoUpgrade = Boolean.Parse(Config.GetSetting("AutoUpgrade"))
End If
Dim UseWizard As Boolean
If Config.GetSetting("UseInstallWizard") Is Nothing Then
UseWizard = True
Else
UseWizard = Boolean.Parse(Config.GetSetting("UseInstallWizard"))
End If
'Determine the Upgrade status and redirect to Install.aspx
Select Case GetUpgradeStatus()
Case Globals.UpgradeStatus.Install
If AutoUpgrade Then
If UseWizard Then
Response.Redirect("~/Install/InstallWizard.aspx")
Else
Response.Redirect("~/Install/Install.aspx?mode=install")
End If
Else
CreateUnderConstructionPage()
Response.Redirect("~/Install/UnderConstruction.htm")
End If
Case Globals.UpgradeStatus.Upgrade
If AutoUpgrade Then
Response.Redirect("~/Install/Install.aspx?mode=upgrade")
Else
CreateUnderConstructionPage()
Response.Redirect("~/Install/UnderConstruction.htm")
End If
Case Globals.UpgradeStatus.Error
CreateUnderConstructionPage()
Response.Redirect("~/Install/UnderConstruction.htm")
End Select
End Sub
Private Sub CreateUnderConstructionPage()
' create an UnderConstruction page if it does not exist already
If Not File.Exists(System.Web.HttpContext.Current.Server.MapPath("~/Install/UnderConstruction.htm")) Then
If File.Exists(System.Web.HttpContext.Current.Server.MapPath("~/Install/UnderConstruction.template.htm")) Then
File.Copy(System.Web.HttpContext.Current.Server.MapPath("~/Install/UnderConstruction.template.htm"), System.Web.HttpContext.Current.Server.MapPath("~/Install/UnderConstruction.htm"))
End If
End If
End Sub
''' -----------------------------------------------------------------------------
''' <summary>
''' LogEnd logs the Application Start Event
''' </summary>
''' <remarks>
''' </remarks>
''' <history>
''' [cnurse] 1/28/2005 Moved back to App_End from Logging Module
''' </history>
''' -----------------------------------------------------------------------------
Private Sub LogEnd()
Try
Dim shutdownReason As System.Web.ApplicationShutdownReason = System.Web.Hosting.HostingEnvironment.ShutdownReason
Dim shutdownDetail As String = ""
Select Case shutdownReason
Case ApplicationShutdownReason.BinDirChangeOrDirectoryRename
shutdownDetail = "The AppDomain shut down because of a change to the Bin folder or files contained in it."
Case ApplicationShutdownReason.BrowsersDirChangeOrDirectoryRename
shutdownDetail = "The AppDomain shut down because of a change to the App_Browsers folder or files contained in it."
Case ApplicationShutdownReason.ChangeInGlobalAsax
shutdownDetail = "The AppDomain shut down because of a change to Global.asax."
Case ApplicationShutdownReason.ChangeInSecurityPolicyFile
shutdownDetail = "The AppDomain shut down because of a change in the code access security policy file."
Case ApplicationShutdownReason.CodeDirChangeOrDirectoryRename
shutdownDetail = "The AppDomain shut down because of a change to the App_Code folder or files contained in it."
Case ApplicationShutdownReason.ConfigurationChange
shutdownDetail = "The AppDomain shut down because of a change to the application level configuration."
Case ApplicationShutdownReason.HostingEnvironment
shutdownDetail = "The AppDomain shut down because of the hosting environment."
Case ApplicationShutdownReason.HttpRuntimeClose
shutdownDetail = "The AppDomain shut down because of a call to Close."
Case ApplicationShutdownReason.IdleTimeout
shutdownDetail = "The AppDomain shut down because of the maximum allowed idle time limit."
Case ApplicationShutdownReason.InitializationError
shutdownDetail = "The AppDomain shut down because of an AppDomain initialization error."
Case ApplicationShutdownReason.MaxRecompilationsReached
shutdownDetail = "The AppDomain shut down because of the maximum number of dynamic recompiles of resources limit."
Case ApplicationShutdownReason.PhysicalApplicationPathChanged
shutdownDetail = "The AppDomain shut down because of a change to the physical path for the application."
Case ApplicationShutdownReason.ResourcesDirChangeOrDirectoryRename
shutdownDetail = "The AppDomain shut down because of a change to the App_GlobalResources folder or files contained in it."
Case ApplicationShutdownReason.UnloadAppDomainCalled
shutdownDetail = "The AppDomain shut down because of a call to UnloadAppDomain."
Case Else
shutdownDetail = "No shutdown reason provided."
End Select
Dim objEv As New EventLogController
Dim objEventLogInfo As New LogInfo
objEventLogInfo.BypassBuffering = True
objEventLogInfo.LogTypeKey = Services.Log.EventLog.EventLogController.EventLogType.APPLICATION_SHUTTING_DOWN.ToString
objEventLogInfo.AddProperty("Shutdown Details", shutdownDetail)
objEv.AddLog(objEventLogInfo)
Catch exc As Exception
LogException(exc)
End Try
' purge log buffer
LoggingProvider.Instance.PurgeLogBuffer()
End Sub
''' -----------------------------------------------------------------------------
''' <summary>
''' CacheMappedDirectory caches the Portal Mapped Directory(s)
''' </summary>
''' <remarks>
''' </remarks>
''' <history>
''' [cnurse] 1/27/2005 Moved back to App_Start from Caching Module
''' </history>
''' -----------------------------------------------------------------------------
Private Sub CacheMappedDirectory()
'Cache the mapped physical home directory for each portal
'so the mapped directories are available outside
'of httpcontext. This is especially necessary
'when the /Portals or portal home directory has been
'mapped in IIS to another directory or server.
Dim objFolderController As New Services.FileSystem.FolderController
Dim objPortalController As New PortalController
Dim arrPortals As ArrayList = objPortalController.GetPortals()
Dim i As Integer
For i = 0 To arrPortals.Count - 1
Dim objPortalInfo As PortalInfo = CType(arrPortals(i), PortalInfo)
objFolderController.SetMappedDirectory(objPortalInfo, HttpContext.Current)
Next
End Sub
''' -----------------------------------------------------------------------------
''' <summary>
''' StopScheduler stops the Scheduler
''' </summary>
''' <remarks>
''' </remarks>
''' <history>
''' [cnurse] 1/28/2005 Moved back to App_End from Scheduling Module
''' </history>
''' -----------------------------------------------------------------------------
Private Sub StopScheduler()
' stop scheduled jobs
Scheduling.SchedulingProvider.Instance.Halt("Stopped by Application_End")
End Sub
#End Region
#Region "Public Methods"
''' -----------------------------------------------------------------------------
''' <summary>
''' LogStart logs the Application Start Event
''' </summary>
''' <remarks>
''' </remarks>
''' <history>
''' [cnurse] 1/27/2005 Moved back to App_Start from Logging Module
''' </history>
''' -----------------------------------------------------------------------------
Public Shared Sub LogStart()
Dim objEv As New EventLogController
Dim objEventLogInfo As New LogInfo
objEventLogInfo.BypassBuffering = True
objEventLogInfo.LogTypeKey = Services.Log.EventLog.EventLogController.EventLogType.APPLICATION_START.ToString
objEv.AddLog(objEventLogInfo)
End Sub
''' -----------------------------------------------------------------------------
''' <summary>
''' StartScheduler starts the Scheduler
''' </summary>
''' <remarks>
''' </remarks>
''' <history>
''' [cnurse] 1/27/2005 Moved back to App_Start from Scheduling Module
''' </history>
''' -----------------------------------------------------------------------------
Public Shared Sub StartScheduler()
' instantiate APPLICATION_START scheduled jobs
If Services.Scheduling.SchedulingProvider.SchedulerMode = Scheduling.SchedulerMode.TIMER_METHOD Then
Dim scheduler As Scheduling.SchedulingProvider = Scheduling.SchedulingProvider.Instance()
scheduler.RunEventSchedule(Scheduling.EventName.APPLICATION_START)
Dim newThread As New Threading.Thread(AddressOf Scheduling.SchedulingProvider.Instance.Start)
newThread.IsBackground = True
newThread.Start()
End If
End Sub
#End Region
2) In the same file change the application_start event handler code to as follows [ This has been taken from DNN4.7 App_Code\Global.asax.vb]
Private Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
'global variable initialization
Dim Server As HttpServerUtility = HttpContext.Current.Server
If Config.GetSetting("ServerName") = "" Then
ServerName = Server.MachineName
Else
ServerName = Config.GetSetting("ServerName")
End If
If HttpContext.Current.Request.ApplicationPath = "/" Then
If Config.GetSetting("InstallationSubfolder") = "" Then
ApplicationPath = ""
Else
ApplicationPath = Config.GetSetting("InstallationSubfolder") & "/"
End If
Else
ApplicationPath = HttpContext.Current.Request.ApplicationPath
End If
ApplicationMapPath = System.AppDomain.CurrentDomain.BaseDirectory.Substring(0, System.AppDomain.CurrentDomain.BaseDirectory.Length - 1)
ApplicationMapPath = ApplicationMapPath.Replace("/", "\")
HostPath = ApplicationPath & "/Portals/_default/"
HostMapPath = Server.MapPath(HostPath)
'Don't process some of the AppStart methods if we are installing
If Not HttpContext.Current.Request.Url.LocalPath.EndsWith("InstallWizard.aspx") Then
'Check whether the current App Version is the same as the DB Version
CheckVersion()
'Cache Mapped Directory(s)
CacheMappedDirectory()
'Start Scheduler
StartScheduler()
End If
'Try and Log the App Start and process the EventQueue (may fail if the database does not exist yet)
Try
'log APPLICATION_START event
LogStart()
'Process any messages in the EventQueue for the Application_Start event
EventQueue.EventQueueController.ProcessMessages("Application_Start")
Catch ex As Exception
End Try
End Sub