Haha, I know this problem should be redirected in the Troubleshooting section but here is this problem.
Sometimes it's fun to lurk the Troubleshooting sections for just these occasions. :D LOL! Thanks!
PS you could always move this directly to the Troubleshooting forum at a later time. Whenever you're ready to move it, just edit the post and where it says "Duolingo" in the editing window, click that. It is a drop down menu. You can select "Troubleshooting" from the menu. When you save your post, it will move it to the other forum.
PS Even though i don't think this is a browser or operating system glitch, it's always good to be in the habit of listing those. (For example, mine would be Windows 7/Firefox)