My search was working fine until I went live this morning with my site, which is in a subdirectory. My gut feeling is something in the htaccess file did this, but I dunno.
If I search for "cessna" everything works fine. But if I search for "cessna airplane" for example, the search string returned is weird - "cessna%2520plane". Where is that '52' coming from?
Anyway the site is live, you can see what I mean here: http://www.ainonline.com