Website was originally with a host that went down 24 hours after set up. The site was moved to Netfirms. It has always been pretty reliable for static websites, but I never used Netfirms for Joomla.
The was transferred, I did the nameserver change (I'm a registrar), and waited for it to propagrate (up to 24 hours). It did it in an hour, disappeared, and didn't return until this morning - for about ten minutes. Now it's gone again.