I was seeing this exact error (on Lucid), and yesterday I switched from apache2-mpm-worker to apache2-mpm-prefork and so far after 24 hours the problem hasn't happened again. It's too early to tell if this is a permanent fix but you might consider trying this and see if it helps.
I was seeing this exact error (on Lucid), and yesterday I switched from apache2-mpm-worker to apache2-mpm-prefork and so far after 24 hours the problem hasn't happened again. It's too early to tell if this is a permanent fix but you might consider trying this and see if it helps.