Hey - same with me! (And, exactly so, in the last two months). Actually, devilbat, I was going to ask you the question in the other Dragon/Dungeon thread (the price one) when I saw you post.
Weird. I do know that the USPS is pretty bad/incompetent when they have to deal with 'uncommon' events (read: anything that has to do with... well...
any border), but I haven't had any problems with Dungeon/Dragon in years - except for the last 2 months or so, when it's now suddenly gotten bad.
(Glad to see someone else in the same boat. Well, not
glad, but YKWIM...

)