Now I've done it. I've searched so many flight options Kayak just locked me out and said I'm a "Bot".
(BOT = a robot search engine.)

The real problem is this: it says if I'm innocent to send them "a message". But clicking on "message" just brings back up the BOT window.

Anyone else had this problem? Will it correct itself?

Ha! I know the feeling of being a robotic, nonstop searcher, although I've never had that happen.

Anyway, try clearing your cookies. If you have another browser, try using that one for the Kayak search.

Yes, clear the cookies and the cache. That might help.

I switched browsers and it worked.

I'll also check after clearing cookies/cache (for future BOT's!).

Thanks. Now, back to finding that elusive $350 fare!