[www.wordpressdomain.com] and [wordpress.com] showing different posts!

hey guys.

the past few days i’ve been noticing that some “posts” have gone missing. i thought it was a server error but i JUST realized that if i go to http://www.fish8me.com/ it displays the posts that were missing from when i visited http://fish8me.com/

i’m not what is affecting whether the post shows up under (www.fish8me.com) or under (fish8me.com)

i’m still open for ideas on how to fix this though.

thanks guys.