Hi We have squid running fine, but every now and then the network connection to squid goes down. Then if you try ping the host, it fails. After the server is restarted, it works again until next time. I have included a section from cache.log which is when squid stopped working. I see near the bottom of the log it says it's shutting down... **************************************************************************** **** CPU Usage: 11.009 seconds = 5.812 user + 5.196 sys Maximum Resident Size: 0 KB Page faults with physical i/o: 3 Memory usage for squid via mallinfo(): total space in arena: 14872 KB Ordinary blocks: 14684 KB 285 blks Small blocks: 0 KB 0 blks Holding blocks: 1108 KB 1 blks Free Small blocks: 0 KB Free Ordinary blocks: 187 KB Total in use: 15792 KB 99% Total free: 187 KB 1% 2009/07/31 10:20:18| logfileClose: closing log /var/log/squid/store.log 2009/07/31 10:20:18| logfileClose: closing log /var/log/squid/access.log 2009/07/31 10:20:18| Squid Cache (Version 2.7.STABLE5): Exiting normally. 2009/07/31 10:20:21| Starting Squid Cache version 2.7.STABLE5 for i686-pc-linux-gnu... 2009/07/31 10:20:21| Process ID 14362 2009/07/31 10:20:21| With 4096 file descriptors available 2009/07/31 10:20:21| Using epoll for the IO loop 2009/07/31 10:20:21| DNS Socket created at 0.0.0.0, port 44027, FD 6 2009/07/31 10:20:21| Adding domain eva.dbn from /etc/resolv.conf 2009/07/31 10:20:21| Adding nameserver 192.168.1.10 from /etc/resolv.conf 2009/07/31 10:20:21| User-Agent logging is disabled. 2009/07/31 10:20:21| Referer logging is disabled. 2009/07/31 10:20:21| logfileOpen: opening log /var/log/squid/access.log 2009/07/31 10:20:21| Unlinkd pipe opened on FD 11 2009/07/31 10:20:21| Swap maxSize 102400 + 8192 KB, estimated 0 objects 2009/07/31 10:20:21| Target number of buckets: 425 2009/07/31 10:20:21| Using 8192 Store buckets 2009/07/31 10:20:21| Max Mem size: 8192 KB 2009/07/31 10:20:21| Max Swap size: 102400 KB 2009/07/31 10:20:21| Local cache digest enabled; rebuild/rewrite every 3600/3600 sec 2009/07/31 10:20:21| logfileOpen: opening log /var/log/squid/store.log 2009/07/31 10:20:21| Rebuilding storage in /var/cache/squid (CLEAN) 2009/07/31 10:20:21| Using Least Load store dir selection 2009/07/31 10:20:21| Set Current Directory to /var/cache/squid 2009/07/31 10:20:21| Loaded Icons. 2009/07/31 10:20:22| Accepting transparently proxied HTTP connections at 192.168.1.11, port 3128, FD 13. 2009/07/31 10:20:22| Accepting ICP messages at 0.0.0.0, port 3130, FD 14. 2009/07/31 10:20:22| HTCP Disabled. 2009/07/31 10:20:22| Accepting SNMP messages on port 3401, FD 15. 2009/07/31 10:20:22| WCCP Disabled. 2009/07/31 10:20:22| Pinger socket opened on FD 16 2009/07/31 10:20:22| Ready to serve requests. 2009/07/31 10:20:22| Store rebuilding is 57.4% complete 2009/07/31 10:20:22| Done reading /var/cache/squid swaplog (7138 entries) 2009/07/31 10:20:22| Finished rebuilding storage from disk. 2009/07/31 10:20:22| 7138 Entries scanned 2009/07/31 10:20:22| 0 Invalid entries. 2009/07/31 10:20:22| 0 With invalid flags. 2009/07/31 10:20:22| 7138 Objects loaded. 2009/07/31 10:20:22| 0 Objects expired. 2009/07/31 10:20:22| 0 Objects cancelled. 2009/07/31 10:20:22| 0 Duplicate URLs purged. 2009/07/31 10:20:22| 0 Swapfile clashes avoided. 2009/07/31 10:20:22| Took 0.3 seconds (22618.5 objects/sec). 2009/07/31 10:20:22| Beginning Validation Procedure 2009/07/31 10:20:22| Completed Validation Procedure 2009/07/31 10:20:22| Validated 7138 Entries 2009/07/31 10:20:22| store_swap_size = 92156k 2009/07/31 10:20:22| storeLateRelease: released 0 objects 2009/07/31 10:21:33| Preparing for shutdown after 0 requests 2009/07/31 10:21:33| Waiting 30 seconds for active connections to finish 2009/07/31 10:21:33| FD 13 Closing HTTP connection 2009/07/31 10:21:33| Closing Pinger socket on FD 16 2009/07/31 10:21:33| Shutting down... 2009/07/31 10:21:33| FD 14 Closing ICP connection 2009/07/31 10:21:33| FD 15 Closing SNMP socket 2009/07/31 10:21:33| Closing unlinkd pipe on FD 11 2009/07/31 10:21:33| storeDirWriteCleanLogs: Starting... 2009/07/31 10:21:33| Finished. Wrote 7138 entries. 2009/07/31 10:21:33| Took 0.0 seconds (4790604.0 entries/sec). Please could someone tell me if they know what is causing this. Thanks Dylan