Webdata Blade and session management

Under the webadmin area you can set the session to be cookie - straightforward URL - encoded - handy for non-cookie aware sites Auto - let the webblade decide The question is how, in case of Auto, is this decision made? Under Win98 and IE5 the blade seems unable to reliable detect that it should be using cookies and then navigates the site using URL encoding. We see the problem under Netscape but no where near as often, and it can be found under Win95/Nt/2000 but Win98 and IE5 seem to have the most trouble. Paul Watson