No major problems here and NO memory problems at all. I have done a couple of big scenes and have used some of the newer functions Ambient Occlusion, etc. Pentium 4/2.8 GHz 2.0 GB DDR SDRAM 128 MB NVIDA GeForce FX Go5700 Poser 6 seems to run as good or better than P5 for me on this machine -- hp PAvilion Notebook. Best Wishes, Rance