Dear all, I have installed fedora directory server version : fedora-ds-1.0.4-1.RHEL4. This ldap server integrates with postfix and our radius server. My problem is when I check the access log I see this error .[18/Feb/2008:11:04:51 +0800] conn=72887 op=-1 fd=593 closed error 11 (Resource temporarily unavailable) - T1 [18/Feb/2008:11:04:54 +0800] conn=72898 op=-1 fd=666 closed error 11 (Resource temporarily unavailable) - T1 [18/Feb/2008:11:05:22 +0800] conn=72895 op=-1 fd=605 closed error 11 (Resource temporarily unavailable) - T1 occuring again and again very frequently. I have already tuned the server according to the tuning guide on fedora directory server site. This is my sysctl.conf : # Kernel sysctl configuration file for Red Hat Linux # # For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and # sysctl.conf(5) for more details. # Controls IP packet forwarding net.ipv4.ip_forward = 0 # Controls source route verification net.ipv4.conf.default.rp_filter = 1 # Do not accept source routing net.ipv4.conf.default.accept_source_route = 0 # Controls the System Request debugging functionality of the kernel kernel.sysrq = 0 # Controls whether core dumps will append the PID to the core filename. # Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1 net.ipv4.ip_local_port_range = 1024 65000 fs.file-max = 128000 net.ipv4.tcp_keepalive_time = 300 Am I missing something that I haven't done ?