Reply To: System letting users rent resources that are already used

I just tried to reproduce it as far as I could from the screenshots. The form is the same as in your other thread.
A reservations in a resource with only one space from 9h till 19h. When I try to reserve it in the form it says
“Not available at 18-09-2013 09:00 – 18-09-2013 19:00”.
And the calendar marks it correctly as full.

Do you have the time option enabled in the general settings? Or give me admin access so I can take a look myself.