This isn't a problem per se...but..
My iMacs dock is shiny.
I've checked both laptops and both Minis, normal looking Leopard docks, but for some reason my iMac has gone "shiny".
It's a better look in my opinion, but I am not entirely certain why it has changed. That I am aware of there has been no graphics update in the past several hours.....Quite odd really.
I am wondering if Dock crashed and reloaded missing a texture..
*Update*
Weird, I've tried killing/restarting the Dock, even restarting Finder. Effect stays.
Any thoughts?