I've just committed an update to the COSS code to fix the source of the "WARNING: failed to unpack meta data" messages that occur after squid gets restarted. This also fixes the errors that would cause a lot of the errors in the cache log during a COSS rebuild once squid had been restarted a number of times. I've been running this code over the weekend on one of our caches, and restarted squid a few times which would normally cause the above errors to occur. The code should be available in tomorrow's snapshot, or can be downloaded or viewed from http://www.squid-cache.org/Versions/v2/2.6/changesets/10979.patch Steven -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.11.7/436 - Release Date: 1/09/2006