Just as the title says, thread is my own

You should be able to delete your own thread. Go to the thread, click EDIT and on the edit page should be an option to click a box and delete the entire thread (assuming you started the thread).

If this doesn't work, just send myself or another moderator a PM and we will delete it. Or you can use the "Report Post" feature and just add a message asking the thread to be deleted.

Its only letting me edit/delete my most recent post. Shooting you a PM. Thanks!

Thread deleted.

I did that once,and then someone started a thread about my deleted thread.:p