multipe uri's and the "Access policy evaluation is already in progress for your current session." error

Hi All,

So we have multiple URI's for our environment. We have an issue where users will go to

http://www.company.com/external on accident, and then switch to http://www.company.com/employees - however, because they hit /external first, they have a session and they can't switch to /employees without receiving the " Access policy evaluation is already in progress for your current session." error. The link that it creates to start a new session does not function at all.

How could we get around this?

Thanks Jon