I've got Optifine and I'm not having the problem. (although good on ya for getting it, you get to see my cape now )
Minecraft.net and logins are down. Great isn't it? Although cape mod, my friend, I currently have a Mojang cape
Nah, what I meant was if you logged out and then back in again, you would have hit the problem. Irrelevant now, the server are back up.