Hi, Is the multithreaded make (i.e. make -j N) for the OTP source meant to work, or did it just happen to work for me ? (Difference with R12B-5: make -j 2: user 443.04 sys 25.94 make: user 1096.51 sys 62.72 ... on a single core machine.) Please someone from OTP, make a statement on this. Thx, /Zoltan