An issue before patch

Q u o t e:
On my main account I cannot right-click to whisper or see item/achievement/other info but in my other accounts I can.

This sounds very much like a UI issue, Atehena.

Have you tried a full, proper reset?

I'd give that a go first, it may very well sort this out for you.

To do a full reset UI, you will want to save your addons in another spot if you wish to preserve them.

Then rename/delete or move your WTF, Cache and Interface folders while WoW is shutdown. Reboot your system.

Note, if you are running Vista make sure your permissions are set so it does not undo your changes.

More detailed instructions for different operating systems, including Macs are here.

http://us.blizzard.com/support/article.xml?articleId=18761&searchQuery=reset%20UI&pageNumber=1