So did a bit of testing tonight, looks like nothing much has changed @Sounddude. Am also seeing a strange IPv6 error which doesn't seem to affect other speedtest servers (linetest.nz doesn't work - just says can't connect to server). This is an odd error, when using a wireless connection with IPv6 enabled, everythign works ok (but its strange that other servers work fine on ethernet without any issues).
The changes were made on the Auckland servers. Are you able to test against those please and paste results again.