The '''''Yahoo! Toolbar''''' and the '''''Babylon''''' extension have been reported to cause that problem. They seem to invisibly extend downward over the top of the web page display area. Disable or uninstall those add-ons. *See --> http://support.mozilla.com/en-US/kb/Uninstalling+add-ons *See --> http://support.mozilla.com/en-US/kb/Cannot%20uninstall%20an%20add-on *See --> http://kb.mozillazine.org/Uninstalling_toolbars *See --> https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You may need to update some plug-ins. Check your plug-ins and update as necessary: *Plug-in check --> http://www.mozilla.org/en-US/plugincheck/ *Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.com/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox] *Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox] *Shockwave Flash (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox] *Next Generation Java Plug-in for Mozilla browsers: [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]