各位大侠，
小站从dv一直到dz6逐步升级到目前的x2.5，目前网站安装在Ubuntu 11.04 (GNU/Linux 2.6.38-8-generic i686)上面，用了性能优化的内存APC优化。但目前apache服务不定时崩溃。下面是错误的log片段，大多都是某些客户端访问了历史上曾经存在的目录，但目前已经没有了。
请问这种情况怎么办才能避免服务崩溃，谢谢大家了！
[Thu Dec 27 02:43:45 2012] [error] [client 124.193.109.113] request failed: error reading the headers, referer:
[Thu Dec 27 02:43:46 2012] [notice] child pid 13764 exit signal Segmentation fault (11)
[Thu Dec 27 02:43:46 2012] [error] [client 124.193.109.113] request failed: error reading the headers, referer:
[Thu Dec 27 02:43:47 2012] [notice] child pid 13858 exit signal Segmentation fault (11)
 …
[Thu Dec 27 02:44:52 2012] [notice] child pid 13963 exit signal Segmentation fault (11)
[Thu Dec 27 02:44:53 2012] [notice] child pid 13849 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:10 2012] [notice] child pid 14058 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:10 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:11 2012] [notice] child pid 14059 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:11 2012] [error] [client 125.74.140.214] File does not exist: /coeffort.com/video/travel.wma
[Thu Dec 27 02:45:12 2012] [notice] child pid 14056 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:12 2012] [error] [client 125.74.140.214] File does not exist: /coeffort.com/video/travel.wma
[Thu Dec 27 02:45:12 2012] [error] [client 125.74.140.214] File does not exist: /coeffort.com/video/travel.wma
[Thu Dec 27 02:45:13 2012] [notice] child pid 13983 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:13 2012] [error] [client 125.74.140.214] File does not exist: /coeffort.com/video/travel.wma
[Thu Dec 27 02:45:14 2012] [notice] child pid 13856 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:15 2012] [notice] child pid 14052 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:16 2012] [notice] child pid 13989 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:17 2012] [notice] child pid 13832 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:18 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:19 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:21 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:21 2012] [error] [client 119.147.6.162] File does not exist: /coeffort.com/bbs
[Thu Dec 27 02:45:22 2012] [notice] child pid 13938 exit signal Segmentation fault (11)
[Thu Dec 27 02:45:22 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:22 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:26 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:27 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:28 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images
[Thu Dec 27 02:45:28 2012] [error] [client 61.178.128.172] File does not exist: /coeffort.com/CoEffortBBS/images |
