A number of security updates have been released for Virtuozzo recently and we are in the process of applying these to the various nodes in the cloud cluster.
Due to the nature of some of the updates a reboot is required of certain controller nodes. These reboots should not impact production nodes, however during the reboot some containers (small/medium plans) may be affected by reduced processing power of the remaining cluster group.
In addition, a handful of customers on the Large VPS plans may experience brief / transient problems as they are moved onto a newer cluster with more powerful processors (we are using the Zero downtime migration method so any disruption should be minimal)