Cannot log out of RWW

SBS 2003 users ( admin as well ) are unable to log out of RWW.

The following page gets displayed:

" The page cannot be displayed
A problem has occurred with the Remote Web Workplace. Close this
browser window, and then log on again. If this problem continues,
contact the person responsible for your network.
"

and the following event is created under applications on the sb2k3
box:

"Event Type: Error
Event Source: SBS.RWW
Event Category: None
Event ID: 0
Date: 7/11/2007
Time: 11:44:56 AM
User: N/A
Computer:
Description:
The following fatal error occurred in the Remote Web Workplace
application:
URL: https://FQDN/Remote/signout.aspx
Error Message: A potentially dangerous Request.Cookies value was
detected from the client
(Microsoft.Sharepoint.AcceptHeaders="...pps=FALSE&one=FALSE&mpp=FALSE").
Stack Trace: at System.Web.HttpRequest.ValidateString(String s,
String valueName, String collectionName)
at
System.Web.HttpRequest.ValidateCookieCollection(HttpCookieCollection
cc)
at System.Web.HttpRequest.get_Cookies()
at remote.RAPLinks.TakeAwayOWACookies(HttpRequest
httpClientRequest)
at remote.signout.Page_Load(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
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)

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
"

it mentions sometimes about cookies, which lead me to delete all
client desktops cookies, and temp ie files, as well as re installing
the certificate..

.