Now I would like to say Im an intermediate Mac user and I know quite a bit but Ive never heard of this. I was watching a DVD and just to check on the temps I opened iStat Pro I realised that CPU was at 100% (with a DVD, smells fishy!) So I brought up activity monitor... There were two processes running called "ditto" which were taking up equal amounts of the idle space (see pic) Now I've force quitted them but I was wondering if anyone could shed some light on what the process is and how it occurred? Thanks!