I'm having an issue with a router showing -2 on buffer misses across the board on the Node Details page, and . Doing some research, I've found a fix for that is going into List Resources and making sure you're monitoring CPU & Memory. Unfortunately, when I check the box and submit changes, I find nothing's changed, and going back into List Resources I find that CPU & Memory is once again unchecked.
I tried selecting an interface on that device, and that worked fine. I turned around and removed it, and that also worked fine.
I then went and tried it on a few other routers, with no problems.
What could this indicate? Because it's only this node having this issue, I don't get the impression it's an issue with the web interface.