CPU usage after stopped search

I’m just wondering why DEVONagent eats CPU time like crazy if I stop a search before it self terminates? This happens often, especially if the search has been going on for some time. …bug? or is Da working with something …one would like to assume that the program evt. reaches a state where it has not much work to do.  

After stopping a search (or after DA scanned all pages), DA retrieves the topics and creates the digest. Both actions might (depending on your computer and the number of results) need some CPU power. However, the next release will improve the performance of those steps.