Sounds like the cache hider is pretty sure it is still there,i don't see the big deal...this is a sport ,if you can't find it log it DNF and go on to another one.The cache owner will have to live with the reputation he puts forth.It does not so much reflect on the seekers ability to find a cache,especially when other cachers are not having any better luck finding it. I know it must be frustrating to have this one nagging you,i think every cacher has 1 or 2 like this at one time or other.Have fun with the sport,try not to let it get to you.