With a properly configured network I have used Spiceworks dozens of times with accurate numbers. Including linux, cisco phones, and all different kinds of printers. Most of the networks I used it on are 50-250 or so items. The largest being about 400+ so not sure why 1,000 would make a difference, try the new 3.0 product maybe you will get better results.
~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
