Hi, the standalone exec. that makes one rootfile from a provided chain eliminating the duplicates is ready and tested. I've ran it over 50kev of run1 d0 and I've produced the resulting rootfile: 146 MegaB of occupancy (I don't know how this is related to the overall occupancy of d0: I see 500 kEv for all D0: Urs, do you know how much space is the d0 data consuming? ) So the production of the 'ultimate' rootfiles, given the duplicates lists, is ready to go....I've slightly modified the killing code, i'm going to post the new killing recipe while committing the code.... Comments and questions are welcomed. Cheers, Alessio ______________________________________________________ Alessio Sarti Universita' & I.N.F.N. Ferrara tel +39-0532-781928 Ferrara "Quod non fecerunt barbari, fecerunt Berlusconi" "Che il bianco sia bianco, e che il nero sia nero che uno e uno fanno due e che la scienza dice il vero.... DIPENDE !"