Got this from one of their people just now -
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Greetings,
On behalf of Nexpoint I would like to apologize for the recent outage and for any delay in response to phone calls or chat request, however, even though we have a 24 hour support team, when we have a hardware failure such as the one we just had, we put every available person on the task of resolving the issue as soon as possible. We value every one of you and your patience in letting us deal with the issue in a timely fashion.
Sincerely
Nexpoint Technologies Inc.
Tel: 866-NEXPOINT [639-7646]
http://www.nexpoint.net