I have noticed that the copy and paste glitch has hit this site with all the new changes.
If you want to copy and paste something to a message here's what you need to do....copy what you want then come to the board. If you want to start a new message or reply to a post but can't seem to paste what you want to....... type a couple of letter in the message box then hightlight them by running the cursor over them then right click and hit paste.....the message you wanted to post to the board will go right over the few letters you highlighted previously. I had the same problem on a webs.com site I was building.
Hope this helps