Glyphs Aren't Showing Up On Characters.

Q u o t e:
I am having a similar issue.My character (level 80 rogue Sisters of Elune) has only a few glyphs available and the rest are greyed out (unavailable).I tried to buy new glyphs to replace them,but got a message that I already know them.I deleted the CACHE,WTF and INTERFACE folders,then restarted a few times,but to no avail.

I sure hope there is another way for it to be fixed for us soon.

One thing to keep in mind that a full reset can sometimes be tricky, especially under some operating systems. Vista in particular is rather fond of making copies of things and using those.

If you've done a full and proper reset, the very first things you are going to see when you start the game back up are the terms of service and cinematics. You should also have NO addon button on the character select screen. If any of that is not true, it wasn't done fully.

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