The site has nothing to do with pandadomainadvisor - which I notice is
down.
I havent done much digging but pandadomain advisor appears to be part of the panda umbrella service which checks all sites for malware etc before allowing you to proceed to the said site. They appear to do this as some sort of DNS request.
The forum has been very slow for me all day, isp Eclipse and using there DNS servers.
Admittedly Ive not been around, but nothing is showing in the logs. The server is higher spec than it needs to be, server load is showing as fine, as are the two external monitoring systems that I use. If it was something to do with the server then I am usually aware of an issue, and I usually go out of my way to inform people if I am aware of an issue, but on this occasion I see nothing that could have caused any problems yesterday.