Deleted Comments

I've had my comments deleted from a few threads over the last few days. I doubt they was deleted on purpose--just harmless stuff like replying to the poll about education levels. I'm also having trouble adding a new topic in TTC--it keeps getting deleted when I make it. It's becoming a pain and it seems to be happening specifically to anything I post, but not in all forums. I can post fine in Success Stories for some reason. Is there a bug fix for this?