At the risk of stating the obvious to lots of Unity members, what I'm about to recommend is for those that have not yet realised it.
I just saw a post in the D7 bug forum saying that, "And of course not use admin panel and the website on the same computer. My website automatically opens the admin profile when I run admin panel at the same time. So I always have to close the admin panel to test changed settings. Annoying ..."
To have two different profiles running on the same machine, be they admin/standard, admin/admin or standard/standard for example, or any combination of different and/or same types of membership, all you need to do is login to your site on 2 different browsers.
Like I said, this pointer is merely for those with less experience.
But for testing out your website using two different profiles the 2 browsers should not be the same type. They must be different.
e.g.ie8 and firefox
BY THE WAY, if you don't already know FireFox has a great little FREE add-on called "FireBug".... which is perfect for altering .css files....
You select what you want to change and "FireBug" will tell you which .css file you will find it in and on which line number!
You can also make changes directly in the "FireBug" program and see the changes take place instantly "BEFORE" see more
BY THE WAY, if you don't already know FireFox has a great little FREE add-on called "FireBug".... which is perfect for altering .css files....
You select what you want to change and "FireBug" will tell you which .css file you will find it in and on which line number!
You can also make changes directly in the "FireBug" program and see the changes take place instantly "BEFORE" see more
I don't want to steal any ideas and copy/paste it to the trac, but if you don't mind, I will add it to the guide.