No, this is the only forum I've seen this problem mentioned. Someone from another game (I have friends in their clan so I post at their site's forums) told me about this forum.
I've "googled" for it but no more info than what we've mentioned here.
I've been through problems like this with other games. Usually if the problem isn't resolved within 2 months of it becoming a problem, it usually isn't resolved.
I forget which game it was but there was an instance of a range of IPs being blocked for some reason due to ISP issues or something. Maybe the same thing here? I have no idea.
If I see anything new, I'll mention it here.