Help! Has my site been hacked?

Every month or so, our shared hosting server crashes and one of the fingers pointed to is my account. “Excessive resource usage: MYUSER (29607 (Parent PID:29188)” These are processes that act like they’re looping until the system is so overwhelmed it crashes. After a reboot, everything comes back up.

The same thing happened yesterday. My hosting provider emailed me – “If you look at the Apache Server Status report (below) you’ll see that psychosolodiver.com was flooded with requests (column named REQ) yesterday morning, just before MySQL hung..I suspect it was a deliberate DOS attack.”

All was fine after a reboot yesterday. However, sometime this morning, I noticed when going to my site, that it’s no longer there.

All it says is: “Psychosolodiver.com — Coming Soon! Really soon”

Thing is, I could still get to my wp-admin logon.

Where would this be pulling from and why? If this is a hacker, it’s a pretty lame message.

I have tried switching templates, but that doesn’t change anything.

I’m running WordPress 3.7 and have the Security Essentials Plugin installed.

I have suspended my account pending an investigation.

What is your take on this? Why would that message all of a sudden be displayed instead of my site?