Exactly what you said about 100 percent uptime. I don't think anyone expects that and like I said I didn't really think much of it at time was only when I saw this post. For my site anyway it was like seconds of downtime and maybe a min or so at a time of it going slow so it wasn't really a huge deal.
Nice to hear its sorted though.
I've had the same problem aswell. Only for periods of time, with ever so slight downtime but I just thought it was maintence being carried out and didn't think much of it but I guess it wasn't.