Hi Guys, can anyone answer this, my server stops responding to http requests after a number of hours.
Everything seems to be up, but there seems to be a lot of php-cgi processes.
Here's a snip from the fast cgi log

19/Nov/2006:19:37:54 +0000	SUID: 49	PUID: 49	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:19:42:55 +0000	SUID: 51	PUID: 51	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:19:42:55 +0000	SUID: 51	PUID: 51	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:19:48:01 +0000	SUID: 52	PUID: 52	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:19:48:01 +0000	SUID: 52	PUID: 52	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:19:53:01 +0000	SUID: 54	PUID: 54	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:19:53:01 +0000	SUID: 54	PUID: 54	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:19:58:04 +0000	SUID: 56	PUID: 56	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:19:58:04 +0000	SUID: 56	PUID: 56	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:20:03:06 +0000	SUID: 58	PUID: 58	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:20:03:06 +0000	SUID: 58	PUID: 58	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:20:18:13 +0000	SUID: 60	PUID: 60	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:20:18:13 +0000	SUID: 60	PUID: 60	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:20:33:21 +0000	SUID: 62	PUID: 62	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:20:33:21 +0000	SUID: 62	PUID: 62	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:20:43:27 +0000	SUID: 64	PUID: 64	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:20:43:27 +0000	SUID: 64	PUID: 64	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:20:48:29 +0000	SUID: 66	PUID: 66	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:20:48:29 +0000	SUID: 66	PUID: 66	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:20:53:32 +0000	SUID: 68	PUID: 68	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:20:53:32 +0000	SUID: 68	PUID: 68	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:20:58:33 +0000	SUID: 69	PUID: 69	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:20:58:33 +0000	SUID: 69	PUID: 69	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:21:03:35 +0000	SUID: 71	PUID: 71	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:21:03:35 +0000	SUID: 71	PUID: 71	RUID: 0	URI: 	timeout-header2!
19/Nov/2006:21:08:37 +0000	SUID: 72	PUID: 72	RUID: 0	URI: 	Reading 56 bytes failed = The process cannot access the file because it is being used by another process.
19/Nov/2006:21:08:37 +0000	SUID: 72	PUID: 72	RUID: 0	URI: 	timeout-header2!

and here's a snip from the website log

89.234.6.166 - - [19/Nov/2006:20:43:27 +0000] "HEAD / HTTP/1.0" 200 0 "" "SiteUptime.com"
89.234.6.166 - - [19/Nov/2006:20:48:32 +0000] "HEAD / HTTP/1.0" 200 0 "" "SiteUptime.com"
89.234.6.166 - - [19/Nov/2006:20:53:32 +0000] "HEAD / HTTP/1.0" 200 0 "" "SiteUptime.com"
89.234.6.166 - - [19/Nov/2006:20:58:33 +0000] "HEAD / HTTP/1.0" 200 0 "" "SiteUptime.com"
66.249.72.84 - - [19/Nov/2006:21:01:35 +0000] "GET /robots.txt HTTP/1.1" 200 216 "" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
66.249.72.84 - - [19/Nov/2006:21:01:35 +0000] "GET /index.php?name=PNphpBB2&file=viewtopic&t=25&start=0&postdays=0&postorder=asc&highlight= HTTP/1.1" 200 44512 "" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
89.234.6.166 - - [19/Nov/2006:21:03:35 +0000] "HEAD / HTTP/1.0" 200 0 "" "SiteUptime.com"
202.108.11.106 - - [19/Nov/2006:21:05:35 +0000] "GET / HTTP/1.1" 200 9216 "" "Baiduspider+(+http://www.baidu.com/search/spider.htm)"
131.107.0.96 - - [19/Nov/2006:21:06:16 +0000] "GET /modules/AutoTheme/style/style.css HTTP/1.1" 200 26 "http://www.mywebsite.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; WOW64; SV1; .NET CLR 2.0.50727)"
131.107.0.96 - - [19/Nov/2006:21:06:25 +0000] "GET /themes/GP-Theme-safe/style/styleNN.css HTTP/1.1" 200 0 "http://www.mywebsite.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; WOW64; SV1; .NET CLR 2.0.50727)"
131.107.0.96 - - [19/Nov/2006:21:06:26 +0000] "GET /javascript/showimages.js HTTP/1.1" 200 1513 "http://www.mywebsite.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; WOW64; SV1; .NET CLR 2.0.50727)"
131.107.0.96 - - [19/Nov/2006:21:06:28 +0000] "GET /themes/GP-Theme-safe/style/style.css HTTP/1.1" 200 2819 "http://www.mywebsite.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; WOW64; SV1; .NET CLR 2.0.50727)"
131.107.0.96 - - [19/Nov/2006:21:06:28 +0000] "GET /javascript/openwindow.js HTTP/1.1" 200 409 "http://www.mywebsite.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; WOW64; SV1; .NET CLR 2.0.50727)"
131.107.0.96 - - [19/Nov/2006:21:06:28 +0000] "GET /themes/GP-Theme-safe/includes/javascript.js HTTP/1.1" 200 1460 "http://www.mywebsite.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; WOW64; SV1; .NET CLR 2.0.50727)"
131.107.0.96 - - [19/Nov/2006:21:06:31 +0000] "GET /themes/GP-Theme-safe/includes/liveclock_lite.js HTTP/1.1" 200 2706 "http://www.mywebsite.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; WOW64; SV1; .NET CLR 2.0.50727)"
131.107.0.96 - - [19/Nov/2006:21:06:03 +0000] "GET / HTTP/1.1" 200 26804 "http://search.live.com/result.aspx?q=www&mrt=en-us&FORM=LVSP" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; WOW64; SV1; .NET CLR 2.0.50727)"

Any pointers?
Thanks
Paul