If you manage content on any of these hosts, please check your scripts for compatibility with PHP 5.3. The following references may be helpful
[2014-09-03 18:07:11 | Rob McNicholas]
Most hosted sites were back in service by 5:30pm, but per-user scripting was not working properly until around 6pm. Upgrading Apache caused some file permissions to be reset to defaults, which do not work in our environment. The suexec executable had to be recompiled and installed by hand to enable suexec functionality again.
Among other basic operating system upgrades, PHP has been upgraded to 5.3.29, Apache to version 2.2.3, and perl to version 5.8.8.
Resolved as of 2014-09-03 18:01:00