Have a look at
and see if that helps
>Quite often people arrive at my site then, after clicking a link, find
>they've got &PHPSESSID=blahblahblah tagged to the end of their URL. This
>then screws up the next link they click, so clicking the wikiword:
>takes them to the page
>BurleyGreenWall& (or BurleyGreenWall%26)
>which of course doesn't exist, and causes them to wonder what went wrong.
>What's causing this and how do I stop it?