500 internal server error - ursache ungewiss

[mick-mac]

guten tag,

ich bekomme seit kurzen immer häufiger einen "500 - internal server error" angezeigt.

die error.log gibt folgendes her:

Code:

[Fri Nov 28 18:25:23 2008] [error] (12)Cannot allocate memory: fork: Unable to fork new process
[Fri Nov 28 18:25:34 2008] [error] (12)Cannot allocate memory: fork: Unable to fork new process
[Fri Nov 28 18:25:44 2008] [error] (12)Cannot allocate memory: fork: Unable to fork new process
[Fri Nov 28 18:25:54 2008] [error] (12)Cannot allocate memory: fork: Unable to fork new process
[Fri Nov 28 18:26:05 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:26:06 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:26:07 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:27:32 2008] [notice] suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Fri Nov 28 18:27:33 2008] [notice] FastCGI: wrapper mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Fri Nov 28 18:27:33 2008] [notice] FastCGI: process manager initialized (pid 1383)
[Fri Nov 28 18:27:33 2008] [warn] FastCGI: server "/var/www/fcgi/master/php5-fcgi-starter" (uid 2000, gid 2000) started (pid 1392)
[Fri Nov 28 18:27:34 2008] [notice] Apache/2.2.3 (Debian) mod_fastcgi/2.4.2 configured -- resuming normal operations
[Fri Nov 28 18:27:42 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) started (pid 1499)
[Fri Nov 28 18:30:12 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) started (pid 1846)
[Fri Nov 28 18:30:34 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 1846) termination signaled
[Fri Nov 28 18:30:34 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 1846) terminated by calling exit with status '0'
[Fri Nov 28 18:30:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) restarted (pid 3079)
[Fri Nov 28 18:30:41 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) started (pid 3092)
[Fri Nov 28 18:30:42 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:30:48 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:30:59 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:31:04 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) started (pid 3139)
[Fri Nov 28 18:31:09 2008] [warn] FastCGI: scheduled the start of the last (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" process: reached dynamicMaxClassProcs (5)
[Fri Nov 28 18:31:09 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) started (pid 3142)
[Fri Nov 28 18:31:34 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3142) termination signaled
[Fri Nov 28 18:31:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3142) terminated by calling exit with status '0'
[Fri Nov 28 18:31:37 2008] [warn] FastCGI: scheduled the restart of the last (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" process: reached dynamicMaxClassProcs (5)
[Fri Nov 28 18:31:37 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) restarted (pid 3225)
[Fri Nov 28 18:31:59 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:32:00 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:32:01 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:32:03 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:32:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3225) termination signaled
[Fri Nov 28 18:32:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3225) terminated by calling exit with status '0'
[Fri Nov 28 18:32:51 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/subms.de/php5-fcgi-starter" (uid 2002, gid 2002) started (pid 3577)
[Fri Nov 28 18:32:56 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/mini-maria.de/php5-fcgi-starter" (uid 2013, gid 2013) started (pid 3588)
[Fri Nov 28 18:33:09 2008] [warn] FastCGI: scheduled the restart of the last (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" process: reached dynamicMaxClassProcs (5)
[Fri Nov 28 18:33:09 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) restarted (pid 3611)
[Fri Nov 28 18:33:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3611) termination signaled
[Fri Nov 28 18:33:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3611) terminated by calling exit with status '0'
[Fri Nov 28 18:33:48 2008] [warn] FastCGI: scheduled the restart of the last (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" process: reached dynamicMaxClassProcs (5)
[Fri Nov 28 18:33:48 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) restarted (pid 3668)
[Fri Nov 28 18:34:06 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:34:07 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:34:12 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:34:14 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:34:19 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:34:20 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:34:35 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:34:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3668) termination signaled
[Fri Nov 28 18:34:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3668) terminated by calling exit with status '0'
[Fri Nov 28 18:35:11 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:35:12 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:35:13 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:35:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3139) termination signaled
[Fri Nov 28 18:35:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3139) terminated by calling exit with status '0'
[Fri Nov 28 18:36:37 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3092) termination signaled
[Fri Nov 28 18:36:37 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3092) terminated by calling exit with status '0'
[Fri Nov 28 18:37:37 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3079) termination signaled
[Fri Nov 28 18:37:37 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 3079) terminated by calling exit with status '0'
[Fri Nov 28 18:39:08 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:46:40 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:46:53 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:46:54 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:46:55 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:46:56 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:46:57 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:46:58 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 18:59:14 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/mini-maria.de/php5-fcgi-starter" (uid 2007, gid 2007) started (pid 9961)
[Fri Nov 28 19:01:08 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/daniel-voelkoi.de/php5-fcgi-starter" (uid 2003, gid 2003) started (pid 11724)
[Fri Nov 28 19:20:48 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/das-heimverzeichnis.de/php5-fcgi-starter" (uid 2006, gid 2006) started (pid 24266)
[Fri Nov 28 19:40:58 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 19:41:08 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 19:41:15 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 19:50:47 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 19:50:48 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 19:51:08 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 19:53:49 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 20:25:36 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (uid 2011, gid 2011) restarted (pid 21914)
[Fri Nov 28 20:25:39 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/vcp-mce.de/php5-fcgi-starter" (pid 21914) termination signaled
[Fri Nov 28 20:53:00 2008] [error] [client 59.26.225.131] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:)
[Fri Nov 28 21:02:33 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/piainderwelt.de/php5-fcgi-starter" (uid 2004, gid 2004) started (pid 5700)
[Fri Nov 28 22:16:05 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 22:16:17 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 22:16:18 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 22:16:19 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 22:16:20 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 22:16:21 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 22:16:22 2008] [error] [client ::1] File does not exist: /htdocs
[Fri Nov 28 23:02:22 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/daniel-voelkoi.de/php5-fcgi-starter" (uid 2003, gid 2003) started (pid 9999)
[Fri Nov 28 23:02:38 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/daniel-voelkoi.de/php5-fcgi-starter" (pid 9999) termination signaled
[Fri Nov 28 23:02:38 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/daniel-voelkoi.de/php5-fcgi-starter" (pid 9999) terminated by calling exit with status '0'
[Fri Nov 28 23:15:52 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/mini-maria.de/php5-fcgi-starter" (uid 2007, gid 2007) started (pid 15514)
[Fri Nov 28 23:16:03 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/mini-maria.de/php5-fcgi-starter" (uid 2007, gid 2007) started (pid 19729)
[Fri Nov 28 23:17:37 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/mini-maria.de/php5-fcgi-starter" (pid 19729) termination signaled
[Fri Nov 28 23:17:37 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/mini-maria.de/php5-fcgi-starter" (pid 19729) terminated by calling exit with status '0'
[Fri Nov 28 23:18:38 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/mini-maria.de/php5-fcgi-starter" (pid 15514) termination signaled
[Fri Nov 28 23:18:38 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/mini-maria.de/php5-fcgi-starter" (pid 15514) terminated by calling exit with status '0'
[Fri Nov 28 23:26:34 2008] [warn] FastCGI: (dynamic) server "/var/www/fcgi/subms.de/php5-fcgi-starter" (uid 2002, gid 2002) started (pid 13502)

leider ist mir nicht klar, was die ursache sein könnte.
kann mir jemand weiterhelfen?

mein system:
debian 4 minimal
ispCP 1.0.0 RC6 OMEGA
build: 20080806

gruß mick

ps: könnte es einfach daran leigen, das dem vserver der ram ausgeht?
/bin/sh: fork: Cannot allocate memory
/usr/lib/php4/maxlifetime: fork: Cannot allocate memory
find: invalid argument `+' to `-cmin'

php5 /bin/sh: fork: Cannot allocate memory