By the way, if You'll perform tests, it brakes some other components, and today I have had to turn it off completely, including ARTIO JoomSEF. It brakes, for example, Classified ads component. Sad, but after paying I have returned to the start of my job and now I do not use SEF. Because of timeline I can not perform any investigation on this issue. And client has desided to not use any SEF for a while.