I've just recently had fibre installed. It's been great, but I've been noticing brief disconnects across all connected devices once every 4 hours or so with the Spark supplied HG630b router. The disconnects are very brief and only really noticeable when playing online dependant games. This seems to be a very similar issue: http://www.geekzone.co.nz/forums.asp?forumid=39&topicid=154197
Any ideas? Any help would be greatly appreciated. Thanks!