@boolean: It must be something in yer settings or a site bug. Try to sort the threads by date (not sure if possible.), see if it works. My account is fine, I dunno why you are seeing these posts.
On a different note, using the eraser in C2 is not practical and would take forever to take the BG off a sprite, let alone hundreds. As of now I use other graphics tools to remove BG colors. Still hoping this is implemented on C2.