Pinto, are you running Poser 4, Pro Pack or Poser 5? I finally had to switch my Poser 5 back over onto C-- much as I hated to do so, because of multiple problems. I can't remember if this was one of them-- it may well have been. And I had 16 gigs of free space. On C I have around 50 G. I don't know what made the difference. But it's sorta running all right now. Has been for weeks on C. I am starting to have some more slow downs and probs now. I ran Poser 4 for a year on an auxiliary FireWire drive with over 20 Gs free. No probs-- except the normal bugs and excessive angst over libraries that were way too full. I do have 2 G RAm and I used the memory patch to access that. 5 just was unhappy on an auxiliary drive, period. Emily