Server Error: Unable to validate data

I recently started getting an Unable to validate data error on my .net 1.1 server.

We do not use a cluster server.  The error happens sporadicly, occasionally when logging in to the system (before any data has been entered by the user).

Are there any other situations that this error would come up?

System.Web.HttpUnhandledException: Exception of type System.Web.HttpUnhandledException was thrown. ---> System.Web.HttpException: Invalid_Viewstate
	Client IP: xx.xx.xx.xxx
	Port: 60122
	User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)
	ViewState: 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
	Http-Referer: https://kitservices1.kithost.net/nyprevent/NYMainPage.aspx?requestID=27
	Path: /nyprevent/NYMainPage.aspx. ---> System.Web.HttpException: Authentication of viewstate failed.  1) If this is a cluster, edit <machineKey> configuration so all servers use the same validationKey and validation algorithm.  AutoGenerate cannot be used in a cluster.  2) Viewstate can only be posted back to the same page.  3) The viewstate for this page might be corrupted. ---> System.Web.HttpException: Unable to validate data.
   at System.Web.Configuration.MachineKey.GetDecodedData(Byte[] buf, Byte[] modifier, Int32 start, Int32 length, Int32& dataLength)
   at System.Web.UI.LosFormatter.Deserialize(String input)
   --- End of inner exception stack trace ---
   at System.Web.UI.LosFormatter.Deserialize(String input)
   at System.Web.UI.Page.LoadPageStateFromPersistenceMedium()
   --- End of inner exception stack trace ---
   at System.Web.UI.Page.LoadPageStateFromPersistenceMedium()
   at System.Web.UI.Page.LoadPageViewState()
   at System.Web.UI.Page.ProcessRequestMain()
   --- End of inner exception stack trace ---
   at System.Web.UI.Page.HandleError(Exception e)
   at System.Web.UI.Page.ProcessRequestMain()
   at System.Web.UI.Page.ProcessRequest()
   at System.Web.UI.Page.ProcessRequest(HttpContext context)
   at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

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