Hey folks,
For anyone following along, we just did a major overhaul of the IP Redirect plugin. It now works off our own server -- not the one from FreeGeoIP. As a result, it's much faster and more stable. We essentially used a 'maxmind-like' approach, in the sense that it doesn't require a domain registration -- but now it's only shared between our handful of customers, instead of the wider web. Much better performance & stability.
Details are here: http://www.shopifyninjas.com/major-update-shopify-ip-redirect/
Cheers,
Tristan.