Suggestions

[Maxpphire]

When you sign in to spriters-resource.com/community/ if you click the banner and go back to the index it signs you out. :c

and i checked, cookies are enabled. (I stay logged in on every other site but not here. p_o)

It's probably because you normally sign into http://spriters-resource.com/ and when you click the banner it brings you to http://www.spriters-resource.com/

Trust me I had the same issue and thats what it was.