Hi, I started getting this alot with squid 3.3.4 whenever I rebott my server , to get rid of it , I have to remove the swap files in each cache_dir :( 2013/05/03 12:44:51| FATAL: pinger: Unable to open any ICMP sockets. 2013/05/03 12:44:51| Store rebuilding is 10.54% complete 2013/05/03 12:44:51| assertion failed: ufs/RebuildState.cc:424: "sde" 2013/05/03 12:44:51| Starting Squid Cache version 3.3.4 for x86_64-unknown-linux-gnu... 2013/05/03 12:44:51| Process ID 1895 2013/05/03 12:44:51| Process Roles: master worker 2013/05/03 12:44:51| With 50000 file descriptors available -- 2013/05/03 12:44:51| icmp_sock: (1) Operation not permitted 2013/05/03 12:44:51| pinger: Unable to start ICMPv6 pinger. 2013/05/03 12:44:51| FATAL: pinger: Unable to open any ICMP sockets. 2013/05/03 12:44:51| Store rebuilding is 10.54% complete 2013/05/03 12:44:52| assertion failed: ufs/RebuildState.cc:424: "sde" 2013/05/03 12:49:56| Starting Squid Cache version 3.3.4 for x86_64-unknown-linux-gnu... 2013/05/03 12:49:56| Process ID 1952 2013/05/03 12:49:56| Process Roles: master worker I have a combination of rock and aufs cache_dirs Thanks.