However Poser - any version - is big. The files it opens and uses are large, and it pulls an unbeliveable number of them into memory, compared to other applications. Not saying that Poser can cause HDD failures per se, but if you have any weakness in your HDD sub-system then Poser will likely be the app that pushes it over the edge. Happened to me twice during the public "beta" of P5, until I realized that my Power Supply was marginal with all the extra HDD and stuff I'd installed. Finally P5 as it was first shipped included Interlok "copy protection". That does write to your HDD disk header "sector 0" area - an area that only Fdisk would/should normally write too. This could conceivably have some side-effects if the HDD sub-system wasn't in good shape. I'm not sure if later versions of P5 CD's still had Interlok code present. (Note SR2 removed the monitoring code, it did not remove the actual Interlok code.)