I have something like this: 2013/12/08 00:18:50| Done reading /home/squid swaplog (293760 entries) 2013/12/08 00:18:50| Finished rebuilding storage from disk. 2013/12/08 00:18:50| 293760 Entries scanned 2013/12/08 00:18:50| 0 Invalid entries. 2013/12/08 00:18:50| 0 With invalid flags. 2013/12/08 00:18:50| 293760 Objects loaded. 2013/12/08 00:18:50| 0 Objects expired. 2013/12/08 00:18:50| 0 Objects cancelled. 2013/12/08 00:18:50| 0 Duplicate URLs purged. 2013/12/08 00:18:50| 0 Swapfile clashes avoided. 2013/12/08 00:18:50| Took 1.00 seconds (294266.73 objects/sec). 2013/12/08 00:18:50| Beginning Validation Procedure 2013/12/08 00:18:50| 262144 Entries Validated so far. 2013/12/08 00:18:50| Completed Validation Procedure 2013/12/08 00:18:50| Validated 293759 Entries 2013/12/08 00:18:50| store_swap_size = 18411592.00 KB 2013/12/08 00:18:50| storeLateRelease: released 0 objects This means 1 object (293760-293759 =1) was not validated. - Can squid still eventually automatically purge that 1 object from disk through aging or something? - Any way to extract through some debug option what that object is? Yes I know it is just one file but I would like to keep the cache clean.