Number of accesspoints in dashboard wrong

Question

When I log in to the ZD dashboard I see a total of 30 AP's online. This is strange because only 29 are placed in the network. If I look in the AP list, only 29 show online as well. 
When I remove an AP the number drops tot 29. 
So it looks like the dashboard gives a wrong number. Anybody else seen this?

unknown · Answer

That's the problem. In my list view of all the AP's, there are only 29 showing as connected.

unknown · Answer

Is your ZD set to accept all join requests ?  You should be seeing unique MAC addresses, you can eliminate the ones you installed against any that aren't yours.

unknown · Answer

Yes it happened to me also, and i don't know why, but resolved by itself.