Error con squid... Ignorado para mantener la búsqueda de árbol splay predecible

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Hola a todos:
Tengo un problema con un PC en mi empresa con Windows 10 (antes con Windows 7 y no pasaba esto), tengo un server proxy con squid en centos 7 y en el departamento hay un programador con Windows 10 (como comente arriba) ahora al navegar por el proxy me da este error con su IP o cualquier otro que le pongo, error --> ignored to keep splay tree searching predictable
Aqui le muestro el conf

#### General options optimizacion ####

cache_mgr not_to_be_disturbed
client_db on
collapsed_forwarding on
detect_broken_pconn on
dns_v4_first on
dns_defnames on
dns_retransmit_interval 2 seconds
dns_timeout 5 minutes
forwarded_for off
half_closed_clients off
httpd_suppress_version_string on
ignore_unknown_nameservers on
pipeline_prefetch 1
retry_on_error on
strip_query_terms off
uri_whitespace strip
visible_hostname localhost
shutdown_lifetime 1 second

# Timeouts
forward_timeout 30 seconds
connect_timeout 30 seconds
read_timeout 30 seconds
request_timeout 30 seconds
persistent_request_timeout 1 minute
client_lifetime 20 hours
####### Fin de Optimizacion ######

###### Agregando ACLs  #########

acl vpnetecsa src 192.168.10.0/24    # Red VPN
acl ashab src 192.168.1.0/24
acl cuba dstdomain .cu localhost
acl si_sites dstdomain "/etc/squid/listas/allowedsites"
acl extensiones urlpath_regex "/etc/squid/listas/extension"
acl ruut src "/etc/squid/listas/desarrollo"

acl SSL_ports port 443
acl Safe_ports port 80<><------># http
acl Safe_ports port 21<><------># ftp
acl Safe_ports port 443><------># https
acl Safe_ports port 70<><------># gopher
acl Safe_ports port 210><------># wais
acl Safe_ports port 1025-65535<># unregistered ports
acl Safe_ports port 280><------># http-mgmt
acl Safe_ports port 488><------># gss-http
acl Safe_ports port 591><------># filemaker
acl Safe_ports port 777><------># multiling http
acl CONNECT method CONNECT
acl lan src 192.168.1.0/24
#
# Recommended minimum Access Permission configuration:
#
# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# Only allow cachemgr access from localhost
http_access allow localhost manager
http_access deny manager

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
###### Reglas para Proxy ################
http_access allow vpn
http_access allow ruut

# And finally deny all other access to this proxy

http_access deny localhost
http_access deny all

# Squid normally listens to port 3128
#http_port 3128
http_port 192.168.10.6:8080
########################################################
#<-----><------>Empezando a Configurar Cache <-><------>#
#########################################################
#### Memoria para el Cache ####
cache_mem<----->512 MB

# Uncomment and adjust the following to add a disk cache directory.
#Cambio ufs por aufs para mejorar rendimiento
cache_dir aufs /var/spool/squid 10000 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid
cachemgr_passwd xxxxx all
#### Fin de Cache #####

#
# Add any of your own refresh_pattern entries above these.
#
refresh_pattern ^ftp:<-><------>1440<-->20%<--->10080
refresh_pattern ^gopher:<------>1440<-->0%<---->1440
refresh_pattern -i (/cgi-bin/|\?) 0<--->0%<---->0
refresh_pattern .<-----><------>0<----->20%<--->4320

####Agregando Reglas####
request_header_access Referer deny all
request_header_access X-Forwarded-For deny all
request_header_access Via deny all
request_header_access Cache-Control deny all
http_access allow manager
#Si quiere que no se vea el IP poner off
forwarded_for on
#Visualizando Nombre del SERVER
visible_hostname empresa.cu

logfile_rotate                7

### Ajuste para ahorrar ancho de banda
memory_replacement_policy     lru
cache_replacement_policy heap LFUDA
redirect_rewrites_host_header off
access_log daemon:/var/log/squid/access.log common !ruut