Firefox 11 target="_blank" link does not show URL in new link window

If I am not at the right place, please let me know where I should post this.  I am using Firefox 11.  When I click on a link that is designated as target="_blank", the new window that is opened does not show the web address of the new web page.  I tried to Google an answer but do not see any relevant information.  Thank you for your help.  janice