If you are experience issue today 15/11/2013 with your VPS, the issue is due to 70Mbps DDOS attack on the VPS-Node-4 and we currently working on the issue, as it seems to me Anti-DDOS protection is not kicked in properly even all IP addresses under the protection.
The current stats of attack are:
Entry : 74.2 Mb/s
Exit : 56.5 Mb/s
Entry : 1153594.2 packet/s
Exit : 196638.4 packet/s
Sorry for any inconvenience caused.