I had Firefox 3.latest. I was urged via Firefox to install Version 4.0. I did -- three times and restarted the computer once. I have two profiles. The first one I clicked on (in the dialogue box after clicking the Firefox icon) came up perfectly. When I closed down that profile, I attempted to enter my other one via the dialogue box. A screen came on with, in theory, my home page which is Google, but when I either tried to use Google or tried to access any of my bookmarks, I got nowhere except a dialogue box saying I was offline and should uncheck the "work offline" box. It was never checked so I couldn't uncheck it and I can't get into that profile which is my work profile. How do I reinstall 3.X so I can work and access my e-mail, etc.