I wrote: > > due to cache coherency issues.) . . . Whoops. I should have credited the quoted part to D Tweed. Sorry. I'm a bit woozy right now. -- = J=F3n Fairbairn Jon.Fairbairn@cl.cam.ac.u= k 31 Chalmers Road jf@cl.cam.ac.uk Cambridge CB1 3SZ +44 1223 570179 (after 14:00 only, please!)