Clique coloring of dense random graphs
  The clique chromatic number of a graph G=(V,E) is the minimum number of colors in a vertex coloring so that no maximal (with respect to containment) clique is monochromatic. We prove that the clique chromatic number of the binomial random graph G=G(n,1/2) is, with high probability, \Omega(log n). This settles a problem of McDiarmid, Mitsche and Pralat who proved that it is O(log n) with high probability. 
Noga Alon, Michael Krivelevich
math.CO