i have same problem, and i have a upgrade my ubuntu from 9.04, also i have changed /etc/sysctl.conf in ubuntu 9.04
i have resolved this problem after i change this file to <code> # # /etc/sysctl.conf - Configuration file for setting system variables # See sysctl.conf (5) for information. # #kernel.domainname = example.com #net/ipv4/icmp_echo_ignore_broadcasts=1 # Uncomment the following to stop low-level messages on console #kernel.printk = 4 4 1 7 ##############################################################3 # Functions previously found in netbase # # Uncomment the next two lines to enable Spoof protection (reverse-path filter) # Turn on Source Address Verification in all interfaces to # prevent some spoofing attacks #net.ipv4.conf.default.rp_filter=1 #net.ipv4.conf.all.rp_filter=1 # Uncomment the next line to enable TCP/IP SYN cookies #net.ipv4.tcp_syncookies=1 # Uncomment the next line to enable packet forwarding for IPv4 #net.ipv4.ip_forward=1 # Uncomment the next line to enable packet forwarding for IPv6 #net.ipv6.ip_forward=1 ################################################################### # Additional settings - these settings can improve the network # security of the host and prevent against some network attacks # including spoofing attacks and man in the middle attacks through # redirection. Some network environments, however, require that these # settings are disabled so review and enable them as needed. # # Ignore ICMP broadcasts #net/ipv4/icmp_echo_ignore_broadcasts = 1 # # Ignore bogus ICMP errors #net/ipv4/icmp_ignore_bogus_error_responses = 1 # # Do not accept ICMP redirects (prevent MITM attacks) #net/ipv4/conf/all/accept_redirects = 0 # _or_ # Accept ICMP redirects only for gateways listed in our default # gateway list (enabled by default) # net/ipv4/conf/all/secure_redirects = 1 # # Do not send ICMP redirects (we are not a router) #net/ipv4/conf/all/send_redirects = 0 # # Do not accept IP source route packets (we are not a router) #net/ipv4/conf/all/accept_source_route = 0 # # Enable TCP Syn Cookies #net/ipv4/tcp_syncookies = 1 # # Log Martian Packets #net/ipv4/conf/all/log_martians = 1 # # Always defragment packets #net/ipv4/ip_always_defrag = 1 </code> i took this from http://ubuntuforums.org/showthread.php?t=597831 -- Packages with custom /etc/sysctl.d/30-foo.conf files can fail to install: start procps returns exit status 1 https://bugs.launchpad.net/bugs/447197 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs