We have a large drawing (approx 35 MB saved) that has about 10 different layouts. After opeing the drawing the amount of memory used increases dramatically after viewing each latout and doesn't seem to release properly so that after a while the computer becomes very slow. The system is a 3.0 Ghz with 1.0 GB RAM. We can see at one particular point that the physical memory usage has has peaked at close to 800 MB and the physical memory usage may drop way down to a low level but the VM size remains at over 800MB until AutoCad is closed and restarted. The page fault is also very high at over 13 million, is this normal or is there something we can do to make this drawing easier to work with? We experience the same situation on another computer with similar specs.