That's the first time I hear about this.  Don't have any explanation for that.

Alternatively you could use flw. link in a second window:

http://peachyforum.com/search/

It's really strange. I have to log in to use the search function. Outside it does not appear. This problem started about two weeks ago.

edit: The link above works fine for me but normally there was also the search function on the right side on top of the page. Now there is an empty space when I'm not logged in.