Hi Vesa,
Both of those reports now show up as "success" status in the Wikimetrics database. Could you do me a favor: log in to Wikimetrics and click "My Reports" to see what status is listed there now?
To answer your basic question: how long a report takes to run depends on a lot of factors. If it's a large cohort, or a cohort that generates a lot of data, if it's a complex query to the Wikipedia database, if the Wikipedia database is not up to date, if the connection between Wikimetrics and the database is experiencing trouble, if there are sunspots*... you get the idea ;) But if those reports still show up as pending for you, or if you are frequently experiencing 1+ hour wait times for your reports to finish, that's probably a sign of a specific bug. So please keep us posted?
Thanks for your help,
Jonathan
*[citation needed]