i've had this same issue. i tp'd to a low lag area, was able to activate voice, then tp'd back home, and voice worked again. also had to relog, but i'm not sure that was what helped. it is frustrating.
we have a waterslide that used to work well but when i rezzed it this year, it throws everyone off to the side. the creator did not respond to my nc. not sure if this is the correct place to post, but would anyone be able to help me ?