First, thank you for Piwik, a very nice tool.
I have a problem of geolocation. I make websites in Senegal (Africa) and all connections from Senegal are tagged as French (maybe cause the provider who is French (Orange)).
So my statistics of Country are false.
Is there a solution to solve this bug?
Good news: GeoIP is now integrated in Piwik, enabling Accurate Visitors Geolocation in your Analytics reports. To enable GeoIP go to the Settings > Geolocation admin page, and follow the short instructions.
You can also get an even more accurate Country & City Database from here to enjoy top accuracy in detecting your visitors locations.
See also the documentation about Geolocation - Analytics Reports in Piwik.