We've been having issues with our Apache 2.0 restarting on us periodically (several times a day). Here's an excerpt from our error log:
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12654)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12655)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12656)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12657)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12658)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12659)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12660)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12661)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12662)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12663)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12664)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12665)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12667)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12668)
[Mon Dec 12 23:17:02 2011] [warn] long lost child came home! (pid 12669)
[Mon Dec 12 23:17:03 2011] [error] (111)Connection refused: proxy: HTTP: attempt to connect to 10.12.0.183:80 (10.12.0.183) failed
[Mon Dec 12 23:17:03 2011] [error] ap_proxy_connect_backend disabling worker for (10.12.0.183)
[Mon Dec 12 23:17:04 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:04 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:04 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:04 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:07 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:07 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:08 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:09 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:13 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:14 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)
[Mon Dec 12 23:17:14 2011] [error] proxy: HTTP: disabled connection for (10.12.0.183)