We use symantec corportate edition here to. My pc is currently using 67Mb. To be honest I don't find that obscene at all for us, all ours PC's have a min 1Gb ram so 67Mb is peanuts. The cost and hassle of going with another solution to save a couple of mb's on client PC's just wouldn't be worth it. Another options worth looking at is Computer Associates solution. Can't remember the name (maybe e-trust), used it at the last place I worked.