mysterious new format problems?

A reader tells me that my new blog format is annoying.  From the description, it sure sounds annoying.  But here’s my trouble:

a) I didn’t change my blog format.

and

b) When I look at the blog, it looks exactly like it always has.

But apparently all of wordpress has fallen into the evil spell.  And when I look at another of the reportedly-affected blogs, it looks the same as always to me.

Help?  Anyone?

Thanks.