[boost] Messages lost

I made two posts to this group on 30 June, around 21:00 UTC. Both received acknowledgements, but neither have appeared. A post to the users group, made at about the same time, appeared there immediately. New messages later than my posting time are appearing, so it doesn't look like it's back-log. Are there any known problems? Apologies if this should be directed elsewhere, but at the moment there doesn't seem to be a route open to www.boost.org (to find out); certainly from my ISP...sigh. (Posting this one at 21:30 UTC)