Firefox and Google Search

I had a little problem with my firefox google search bar, but it is nothing serious. I recently edited the search engine that it uses for default and the Google search bar so that you could use search preferences on google w/o a cookie. But after I did this, whnever I would use the google search bar it would add a "?=" (w/o quotes) to the beginning of any search term i put in. This would only happen once it got to the google and it would not effect the search because i dont believe taht google uses "?=" as part of its search anyway. But I was just wondering why it did this, as it would not do this if i put the same search term in the address bar (I also redirected that so it didnt do an Im feeling lucky search everytime).

this is my google.src file:

Code:

---

# Mozilla/Google plug-in by [email protected]

<search
  name="Google"
  description="Google Search"
  method="GET"
  action="http://www.google.com/search?hl=en&lr=&safe=off&q=+"
  update="http://www.google.com/mozilla/google.src"
  updateCheckDays=10000000 
  queryEncoding="utf-8"
  queryCharset="utf-8"
>

<input name=" " user>
<inputnext name="start" factor="10">
<inputprev name="start" factor="10">
<input name="ie" value="utf-8">
<input name="oe" value="utf-8">

<interpret
    browserResultType="result"
    charset = "UTF-8"
    resultListStart="<!--a-->"
    resultListEnd="<!--z-->"
    resultItemStart="<!--m-->"
    resultItemEnd="<!--n-->"
>
</search>

---

The only three lines I edited are in bold and as the first two are pretty obvious as to why I edited and the second one because it had a 'q' inside of the " " and previously it would also add a q to the search (which would screw up the search results) so I took it out.

P.S. sorry if this is vague as I am almost sure i missed a lot of points that seemed trivial to me but might actually be of importance.