  We present numerical results obtained in full QCD with 2 flavors of Wilson
fermions. We discuss the relation between the phase of Polyakov loops and the
{\bf sea} quarks boundary conditions. We report preliminary results about the
HMC autocorrelation of the hadronic masses, on a $16^3 \times 32$ lattice
volume, at $\beta=5.55$ with $k_{sea}=0.1570$.
