Pw-pix, thank you for your suggestion, however it might be too late for that, and I probably will have to live with that...I'm going to try some options though like updating OS, using a diffetent card or just shooting in slower/ diffefent modes. I might be abusing the camera too much with that 8 shots per sec. mode.
Thanks for your question but no- I'm checking whether touch screen option didn't turn accidentally frequently because it happenned a couple of times before. Sometimes I assume those accidental shots might have something to do with overheat or smth. Anyway, it's annoying...