There have been many issues with this node because of it running CentOS 6.0 -- The new 2.6.32 kernel and OpenVZ are not playing well. Again today, there was downtime. We have performed one last "fix" for this OS -- after that we are backing down to CentOS 5.6 which we will know will run without issue.
We wanted 6.0 just simply because it is so much faster with 2.6.32 vs 2.6.18 kernel.