A perplexing incident

A reader writes,

Paul,
Something very odd just happened when I clicked on the link to access your site [this blog, concerning the Kerry disclosure]. I have broadband now, I wait for the window to pop open. Well, it did pop open, but for a couple of blinks of the eye it wasn't your site -- it was a page that had a military or police type emblem in the middle with a four- or five-figure number underneath it, some lines of copy under that... but I'm giving you an impression of an impression. It definitely looked "official." Then the window went dark and your site popped open. I am not making this up.