"Add links to other web search sites" progressively adds and additional repeat line for each time the 'search' button or 'Next' link is clicked.
Sometimes the first or second is OK, but subsequent 'search' or 'Next' clicks keep adding additional lines. Eventually it fills the entire search page.
I narrowed down the problem to some google cookies. When these cookies are deleted, google replaces them, and there seems to be no problem. I don't know what the problem is with these particular cookies. This file contains 5 cookie entries from google, viewable in the Firefox native 'View Cookies' window. However, only 2 of these cookies show with the 'View Cookies' extension.
The Firefox "cookies.sqlite" file containing only the google cookies is attached.
Firefox 3.6.8 on Windows XPsp3, OptimizeGoogle 0.78.1
No other extensions involved.
Thanks for keeping google customization alive.
Google Cookies causing a problem.