I don't think so... this is the 3rd day when the server drops at around this same hour. It will pick up in half an hour or so. slush said he will ask the provider what's going on. Hope he finds out.
I was watching today's outage whole time, with another sysadmin. We didn't found anything wrong with application, but internal routing looks corrupted. It is crazy that it is always at the same time and after some time it recover itself. Linode guys are saying that everything works on their side, but I'm now absolutely sure that those issues are related to infrastructure. So I'm forced to change provider, which unfortunately will take some time.