In a fresh 2.7 installation only default links work.
When I choose, any other than default option, for example “month and name”, clicking on links in the side bar results in “Error 404 – Not Found”. I am talking about links in Pages, Archives, Categories.
The blog in question is www*random-blurbs*com. Could you check your installation? Is it a bug or something is wrong with my installation?
New Installation (2.7)
Disk space required: 7.27 MB
Disk space available: 249990.5 MB