Translation: “We will performing maintenance on Monday, June 26th between 18:00 (CEST) and 22:00 (CEST). Restrictions and disconnections may occour during this period. However, it should be possible to log in again.” Same for tuesday…
Blizzard alone has employees around the globe and can’t manage to perform maintenance at night for specific regions?
It’s called ressource-monitor, accessable via the taskmanager at the performance tap. Assuming diablo using the most bandwidth for syncing with the server, you can sort by traffic, copy the IP and use an IP location finder (search for it on Google).