Bookmarked pages opening in the side bar is generally caused by Bookmarks that are created via clicking on a link or button on a website to create a Bookmark for the page. Make sure that "''Load this bookmark in the side bar''" is '''''not''''' selected/checked. *Open the Bookmarks Sidebar (Ctrl+B to open or close the Bookmarks Sidebar), right-click the offending Bookmark, choose "Properties", last item at the bottom above "Save/Close" buttons *In the Library window (Bookmarks > Show All Bookmarks), click the offending Bookmark, click the "More" button at the bottom of the Details pane (right-hand pane), item is the last item above the word "Less". '''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]