All this is over my head, but I've always wished each package description would contain a Date: field so one could tell how stale it was. Likewise, the Release could just have a Date: field, and the software reading it could choose how many days it should be valid for with a default = 7 days or whatever. Anyway, do HTTP headers have Expires: etc. fields before having a more basic Date: field? No. OK, all over my head. Over and out.