Forum:Editing signature

Right now when I click on the signature button I get this: MrRandyLG 20:06, September 28, 2010 (UTC) I was trying to change it by going to preferences and putting it in the signature box. then i clicked save and refreshed. I don't see it changed so i log out and log back in. still no change. What am I doing wrong? Any suggestions? MrRandyLG