I'm using the The Dude v3.0 Beta 8, and I have a couple weird problems:
1) On one map, I have all servers and the user workstations at one location - I've turned off all monitoring of the workstations, but 4 of them refuse to stay off.... after a short while, ping monitoring is re-enabled on the same 4 workstations.... It got so annoying that I just removed the workstations entirely. The state of the "lock icon" made no difference - this happened if it was depressed or not.
2) I have several maps - one for each storefront site of one of my clients. Randomly, the entire contents of the first map (the largest) will get added onto of the other maps... This is even more annoying. Again, the "lock icon" does not stop this from happening.