I have not had an issue with the servers going down, in fact i have found them quite quick. But the support has absolutely dried up since they launched. I have received several emails telling me that it was 'customer service week' but unanswered tickets from six months ago remain unanswered.
They seem to spend more time spamming other sites with positive feedback and deleting comments than actually addressing the issue, which is a pity as they started out as a very promising drupal hosting option.
If you are looking for hosting, go elsewhere.