@VLAD, you may have turned on "Three finger dragging" in the point and click pref pain for Trackpad (which makes the other 3 finger items 4 finger items). Even if you unclick it, you need to go back to more gestures and switch things back to three fingers...

THAT SAID...

I'm all for the 3 finger click and drag, and 4 finger desktop/full-app switching and 4 finger application expose. I highly recommend turning on the 3 finger for moving (which essentially means 3 fingers equals a click and drag, even when selecting text.)