Or am I slowly going insane?

I noticed it last night, and I'd swear one moment it was normal, and then the next time I clicked it things had changed, and not for the better. It's too big, too spaced out, and the mouseover color is too light. Wah!

*Edit* Ugh, that phtoto was too tall to be used as the thumbnail image. Hate how the auto-resize is based only on the width.