I'm glad I found this thread. Our WordPress has been under VERY VERY heavy load:
<strong>[root@webserver ~]# uptime
05:34:57 up 17 min, 1 user, load average: 174.90, 102.32, 47.78</strong>
And the log files appear to have the same details as above. I wanted to make a note here first, and now I will go through and see if the solution above helps us too.