I noticed that squids use of filedescriptors is ever increasing. Today, after a restart, the numbers would drop again - to normal levels. I found that the decrease in filedescriptors ("cacheCurrentFileDescrCnt") correlated in a similar decrease in the number of clients ("cacheClients"). Coulod it be that squid is not freeing or expiring cacheClients properly? On the weekend there are only few people working at the hospital, thus the number I saw a few minutes ago, immediately before the restart were totall unrealistic: cacheClients was at 4.500 for all 4 proxies, meaning that everybody @charite was using the proxy... -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt@xxxxxxxxxx | http://www.charite.de