Login Bug

I am having a problem that I want to resolve before xwiki becomes our production knowledge base. I have xwiki set so that you have to log in to view the content. LDAP is configured in xwiki.cfg. Upon navigation to the login page, it is displayed in an unformatted manner. You can see the User and Pass box...but when you go to enter them in it will bring up the style.css. This displays out as totally illegible and unformatted. Now here's the kicker. When you hit the back to go to the log in page, it's displayed correctly. When you hit the forward button, you got it....it's the front page for the xwiki. When I reproduce this, which I have before, I can send in some screen shots of what I am talking about for those of you that may not know. I just figured this might be a common issue. xwiki 0.9.840 MySQL 4.1.12 SunOne Web Server 6.1 Thanks, Tim