There is a new version available of the “OWA Most Popular”-plugin. The big change is that it’s now possible to configure a certain date range for the most popular posts.
OWA Most Popular – version 0.3
The insights of a Quirky Tech Enthousiast on his journey through the fast paced IT landscape.
Karim Vaes 
Note: There’s been a small bugfix (0.4).
For a manual update: check the “globals” section, and see that all have “global” in front of them… 😉