Firefox has an accessibility feature where you can be asked to approve a redirect before Firefox proceeds to the new page. If you turned that on, you get an "infobar" sliding down between the toolbar area and the top of the page. This is generally more annoying than helpful, so you can turn it offhere: Mac: "3-bar" menu button (or Firefox menu) > Preferences Windows: "3-bar" menu button (or Tools menu) > Options In the left column, click Advanced. Then on the right side, make sure the "General" mini-tab is selected. If it is checked, ''uncheck'' the box for "Warn me when websites try to redirect or reload the page" Does that fix it?