Are you clicking the links in Firefox or in another (external) program like email ?

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes). See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

I have currently FF 3.6.8 running under Windows XP 32 bit. I am using Multiproxy Switch ver 1.33 add-on to switch between multiple proxies. My FF starting page is http://www.google.com/ncr . When I start Firefox and the actually configured proxy is unreachable, I get the usual message that the page cannot be opened ("Try again"). Then I switch to another proxy or to direct connection. Normally the desired page (google) opens. But in case I switch the proxy before the error message appears, this grayed message "Search Bookmarks and History" appears instead of the URL in the URL input field and I have to retype the URL. Remark: I would really like to have this function "Searching Bookmarks and History" available in Firefox, because I often do this kind of search and need 4 clicks to get there (Bookmarks-Organize Bookmarks-Bookmarks Menu-and then input my search criteria).