Before posting your avatar, be sure that the size is correct. It can only be 160 x 160. They can't be large. I know some people have that problem. If you need to custome size something, use this: www.resize2mail.com
This site is free and easy. I use this one a bunch. Resize your photo and try again. Then while you have your page open (after reloading your new avatar), hit F5 or refresh your page while you are sitting there and see if it changes. If not, restart your computer and see if that helps. I'm not sure if there are any software issues causing problems right now or not. I've changed my avatar several times with no trouble. Try again and let me know if you can't get the one you want. I can email Alan and get it changed.
I am thinking of starting a free banner exchange for anyone with a paranormal website. If you think this is a good idea then let me know. If there is enough interest I'd start it up.