it actually runs natively pretty much as fast as you were in windows. unlike virtuals like parallel or vmwware where performance is halved and with limited 3D rendering crossover runs like you are on windows with full rendering in 3D graphics. the problem with crossover is its picky, ive been running Surpac and Mapinfo 32 bit on it for 6 months now and its running smoothly. just tried Arcgis with the new crossover, Ive patched it in a way it doesnt need the license manager this was one of the hiccup in the old days flexlm dont work with crossover. it installed ok runs well till you choose a template, now once it goes beyond the template you have a few seconds to use it before it crashes. i suspect one or more of the add ons or toolboxes loading up causes this crash. i have to look more into it. besides Arcmap crashing , ArcCatalog and others work fine maybe. its slowly getting there