Very Slow Load

My client’s blog site has suddenly slowed way down. Over a minute to load a page. The strange thing is that the home page with the excerpts loads fine, but if you click on read more, the page takes over a minute to load.

If you go to the archive column which shows up on the full post page, clicking on the archive by title loads slow, clicking by month loads fine.

I would appreciate any ideas.

centerforpositiveleaders.com