Can't keep MEP 2010 on the screen long enough to complain about how slow sheet sets, annotative text, and serial plotting of pspace vports are (to name a few). I can't believe that with 64-bit and 8 cores I'm still taking 1.5 hours to plot some of my 3d drawings 1 vport at a time. Plotting, in particular, would seem to be a good opportunity to thread and process in parallel. This would quarter our plot times.
Of course, nothing matters more than stability. We're going to switch all computers back to 2008 by Feb if we can't get things stablized before then. We spend as much time recovering drawings as we do working (trying to).