you can download it directly from unity http://unity3d.com/get-unity/download/archive oh they changed the layout - its hidden in the downloads dropdown
what did you increase it to? try an high value like 256 to see if it has an effect, if there's no improvement then the problem must like with the layout of your lightmap
What are you baking with? I know Softimage will store the UV layout in the alpha channel when baking to certain formats that support it, perhaps this is doing the same?
I'm no character person, but the page looks good except for the blogger bar above the banner. You can disable that somewhere in the layout options if you want.
A model I've been working on recently. Playing around with the presentation layout sheet. I see a few things that need to be fixed. Suggestions and feedback are welcome.
Here is a layout of the scene: Here are some screen grabs from max: Right now I'm working on the outer environment. Will hopefully have an update of that soon.