.. And similar errors in other browsers.

Hi all, has anyone come across this issue?  Temp fix appears to be making a quick change on the web.config file or clearing the browser cookie.

It's worth adding we did put a custom script in the websites, we have a table in the database that stores IP addresses.  Inside the App_Code/Global.asax.vb file we check the users IP, if their IP is in the list then they get automatically logged in as a generic user, else they are presented with the login screen.

We have a near identical local server that has a replication of the sites, that has been running on .NET3.5 for some months now so I don't suspect the above code to be the direct cause, but it's also worth mentioninig the sites that don't have this code are not coming back with redirect issues.

I believe the redirect issue pops up again and again when the cookie has expired.

Any suggestion would be appreciated! Let me know if you need more information from me.

Chris