Integration

I meet that follow error message " Out of socket memory"
Do you know this message?
I don't know what's the problem. If you possible, tell me why that problem happens.
Thanks for your help.

---- error message ---------------------------------------------------------------------
[var/log/messages ]
Nov 24 15:20:46 INTEREST4 last message repeated 2 times
Nov 24 15:21:05 INTEREST4 kernel: Out of socket memory
Nov 24 15:21:52 INTEREST4 kernel: TCP: too many of orphaned sockets
Nov 24 15:22:55 INTEREST4 kernel: TCP: too many of orphaned sockets
Nov 24 15:23:52 INTEREST4 last message repeated 3 times
Nov 24 15:24:25 INTEREST4 kernel: Out of socket memory
Nov 24 15:35:11 INTEREST4 kernel: Out of socket memory
Nov 24 15:49:50 INTEREST4 kernel: TCP: too many of orphaned sockets
Nov 24 15:52:33 INTEREST4 kernel: TCP: too many of orphaned sockets
Nov 24 15:53:52 INTEREST4 kernel: TCP: too many of orphaned sockets

[errors]
[24/Nov/2005:17:33:52] failure ( 2689): Error creating DaemonSession thread
[24/Nov/2005:17:33:55] failure ( 2694): Error creating DaemonSession thread
[24/Nov/2005:17:33:56] failure ( 2523): Error creating DaemonSession thread
[24/Nov/2005:17:33:59] failure (32705): Error creating DaemonSession thread
[24/Nov/2005:17:34:00] failure ( 2576): Error creating DaemonSession thread
[24/Nov/2005:17:34:02] failure ( 2532): Error creating DaemonSession thread
[24/Nov/2005:17:34:05] failure ( 2585): Error creating DaemonSession thread
[24/Nov/2005:17:34:07] failure ( 2571): Error creating DaemonSession thread
[24/Nov/2005:17:34:10] failure ( 2571): Error creating DaemonSession thread

-- Operation -------------------------------------------------------------------------------
uname -a
Linux INTEREST4 2.4.7-10smp #1 SMP Thu Sep 6 17:09:31 EDT 2001 i686 unknown

[root@INTEREST4 /proc/sys/net/ipv4]# ulimit -a
core file size (blocks) 0
data seg size (kbytes) unlimited
file size (blocks) unlimited
max locked memory (kbytes) unlimited
max memory size (kbytes) unlimited
open files 16384
pipe size (512 bytes) 8
stack size (kbytes) 8192
cpu time (seconds) unlimited
max user processes 8191
virtual memory (kbytes) unlimited

[magnus.conf]
RqThrottle 1024
#RqThrottle 2048
MaxProcs 2
ListenQ 512
#ListenQ 4096
KeepAliveQueryMeanTime 10
StackSize 131072
CGIWaitPid on
AsyncDNS off
KeepAliveTimeout 0
KernelThreads off
PostThreadsEarly off
ConnQueueSize 10000
MaxKeepAliveConnections 4096
UseNativePoll 1
TempDir /tmp/https-INTEREST-908b4e9e



[sysctl-a]
net.ipv4.tcp_max_syn_backlog = 8192
net.ipv4.tcp_rfc1337 = 1
net.ipv4.tcp_stdurg = 0
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_syncookies = 0
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_time = 900
net.ipv4.ipfrag_time = 30
net.ipv4.ip_dynaddr = 0
net.ipv4.ipfrag_low_thresh = 196608
net.ipv4.ipfrag_high_thresh = 262144
net.ipv4.tcp_max_tw_buckets = 1000000
net.ipv4.tcp_max_orphans = 32768
net.ipv4.tcp_synack_retries = 5
net.ipv4.tcp_syn_retries = 5
net.ipv4.ip_nonlocal_bind = 0
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.ip_autoconfig = 0
net.ipv4.ip_default_ttl = 64
net.ipv4.ip_forward = 0
net.ipv4.tcp_retrans_collapse = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.core.hot_list_length = 128
net.core.optmem_max = 10240
net.core.message_burst = 50
net.core.message_cost = 5
net.core.mod_cong = 290
net.core.lo_cong = 100
net.core.no_cong = 20
net.core.no_cong_thresh = 20
net.core.netdev_max_backlog = 2500
net.core.rmem_default = 65536
net.core.wmem_default = 65536
net.core.rmem_max = 8388608
net.core.wmem_max = 8388608

Thanks.