User Permissions Get Mixed Up When Using Switch User

I am having a permissions issue when using "switch user". I have one account which is a domain administrator with full rights to most things on the internet (including yahoo.com). I have another account which is mostly locked out of internet access. If the non-admin employee is using the PC and has an issue, and then uses "switch user" and the admin person signs in, the admin cannot get to anything on the internet, it appears the permissions of the first user take over.

The same thing happens if I reverse the process. I rebooted the PC and had the admin sign in. We could access Yahoo. Then did a "switch user" and had the non-admin sign in and now she could also get to yahoo.

I am running a test now to see if the permission will clear up after some time. So far they have not. ** update, the permissions finally cleared up and the non-admin person cannot get to internet. Took about 30 minutes **

Is this by design? If so, does anyone know why? If not is anyone else experiencing this issue or have ideas as to why I am having it?

Thoughts appreciated!