Facebook sends messages by itself...

Hello,
My problem is that, 2 or 3 days ago, a friend posted a link in Spanish on my wall and I unfortunately clicked on it, which led me to a page where nothing was displayed...
I closed the page and then went about my business, but since then, my Facebook profile has been sending that same link to my "friends" wall multiple times a day!
I can't get rid of it at all...
If someone has a solution to stop this, that would be great...
Thanks in advance
A.

Configuration: Windows Vista / Firefox 8.0