I am not sure about what i have said that it might be the cause but it really happened at the very same time...
I am walking on the under ground tunnel on Route 5 then I saw a voltorb moving downwards i followed it and tried to talk to it then suddenly it all freezes and bam. i can't connect anymore. until i saw the server status at the website that its offline already.. might be good if you take this into consideration of it sounds suspicious. thanks!