I do a search. Suddenly it doesn't work. Then I have to close a tab ( a window ), open it again and then I can find the information again. It has started already some months before a feed wire problem occured. And the feed wire is OK now, at least last time was. Why the search doesn't work sometimes? Is it normal? And how shutting down/opening again tab helps with it?

There's not nearly enough information in this description to venture a guess at what might be happening, let alone why.. - "I do a search": With what? Finder? A browser? Which browser? What are you searching for, a local file? something on the internet? - "It doesn't work": How does it not work? Does it not find what you're looking for? Does it freeze? Does it not respond at all? Do you get an error message? This is the kind of issue where someone might have to see what's happening, or at the very least have a much more detailed and specific description (as above)..

I'm using a Mozilla Firefox as a browser for search. Google search about local life or worldwide; local sites don't work, facebook and other sites have searching problems, too. It means, the problem is wide. It doesn't work I mean I put a search, tap and nothing happens. The search is not starting. I just have my page or google search bar and no reaction. Reaction is winding circle and then search results. No error message. Yesterday were two firefox tabs open; if I closed one, no help; I had to close both of them, then opened firefox window again and then I could do the search.

Several things.. 1. As always, do as hard shutdown & restart first 2. Check your internet connection -- can you connect to the internet or retrieve email reliably ? It sounds like your internet connection could be down intermittently. If you have other/general problems connecting, contact your isp 3. Delete the Firefox Preference file -- it could be corrupted 4. Reinstall Firefox -- it could be corrupted 5. Try another bowser (Safari, Chrome) -- if the problem only happens in Firefox, use a different browser or see 3. & 4. If the problem persists in all browsers, see 2.

Yes, it seems like an internet connection is down temporarily. Thanks for advices!