I got it also, so I think it's a server issue, not ISP or anything else. I would guess that either 2 many bots are trying to attack the PHP code or they are not fully migrated over to the new servers.
I know my site has no PHP but gets bombarded almost hourly by bots trying everything to attack the PHP code. It also doesn't help that once, long ago, my site was a wordpress site and now wordpres sites are the number 1 target for attacks on the net.
http://www.theinquirer.net/inquirer/news/2374855/wordpress-is-the-cms-target-of-choice-for-cyber-crooks
