QCD Phase Diagram at small Baryon Densities from Imaginary mu: Status   Report
  We summarize our recent results for the (T,mu)-phase diagram of N_f=3 QCD. Finding a strong variation of the critical endpoint mu_c with the quark mass m, we point out that an endpoint within reach of experiment requires fine-tuned quark masses. We further discuss the strategy and first data towards extending our results to the physical N_f=2+1 theory. 
O. Philipsen and Ph. de Forcrand