In order to figure it out what is delaying an activity links and resource dependencies are not enough when leveling materials and financial resources, it is the Reason of delay field what gives me this information. There are several places where you can make this field visible but perhaps the most accessible would be at the activity properties.
[1]
[2]an additional tab to make room for Reason of delay would be convenient. Perhaps two Calculated Data tabs not only will make room for this field but also might reduce the clutter if interruptions are moved to this additional tab.
As soon as Spider implemented this field I stopped using resource dependencies, this is easier, faster and do not miss materials and financial resource leveling as a source of delay.