Is this rendering issue a Flickr or Firefox 3 problem?

When I do a tag search on Flickr, the pages aren't rendering properly. Take a look at these screenshots:

1. When doing a tag search, the Flickr page doesn't fully render over the previous page I was looking at.

http://img136.imageshack.us/img136/76...

2. When I click 'next', the same problem is evident. You can see two flickr pages superimposed on top of each other.

http://img501.imageshack.us/img501/76...

3. If I scroll down the page, and click next again, a further complication occurs: The scrollbar is right at the top, but the top of the page isn't visible. I have to scroll down and up again, in order to make it render properly.

http://img501.imageshack.us/img501/69...

I'm a heavy internet user, and do a lot of surfing, and I haven't seen this problem on any other site, so I'm a little confused about whose problem it is.