Note that the IP addresses are only slightly different, 85.189.44.59 and 85.189.44.79 indicating a possible fail-over server setup at Dr. Chronic's ISP. Also lets him track how much traffic each address generates.
If the addresses were wildly different, you would have some reason for some concern. There are legitimate reasons for such situations. Our backup server is in Costa Rica, and the main server is in the Netherlands, so when you get routed to the backup server, you see a big difference in IP address.
Better to check things out when you get worried.
Cheers,
Gene