Am using Opera 25,only two days ago whenever I started the browser I get this site:
http://www.only-search.com/?babsrc=HP_ss_nch_opera&mntrId=ECA600164471A6EA&affID=129300&tsp=5417
instead of the start page!!
I failed several times to remove it or to block it, besides, I can't manage the start page or the search engines !!!