helmug.gr down again

Right now, helmug.gr is down again. From what I observe on the machine the problem might be with DNS:

• resolving helmug.gr on ns1.otenet.gr gives the old IP
• resolving www.helmug.gr on ns1.otenet.gr gives the old IP and the old authoritative nameservers
• at some point OTEnets DNS servers had the proper IPs for this host all right
• those names resolve just fine with other providers
• they are also properly set up at the authoritative name servers
• the web and pop/imap servers can be contacted, but they don't respond properly after initial connection
• web and pop/imap have lots of funny error messages in their log files: "Warning: mysql_connect(): Too many connections in /Library/WebServer/Documents/pnadodb/drivers/adodb-mysql.inc.php on line 170" and the like
• restarting the mail service does not change anything
• contrary to the first problems we had when all DNS servers showed the old IP, using helmug.betabug.ch does not work for web and pop/imap

To me the conclusion is that the providers (OTEnet) DNS servers have wrong information (either they jumped back in time and are grossly outdated again) or someone there fscked up the settings for their DNS (tryed to redefine the zone?). And since the server wants to look up its own name, it gets wrong information, which messes everything up in a deep way.

If anyone has more clue than me, please enlighten me!