A client has brought me back on--after a four month hiatus--to write and maintain their blog (among other duties). I upgraded the blog to 2.7 and after ironing out some strange behavior from some plugins, everything now seems to be working. Except that clicking on a month in the blog archive refreshes the page with the same list of the latest entries.
The template was designed by a different company and I've messed with the code a bit on my "testbed" version of the site but so far cannot totally isolate the problem. Any insights as to what I am missing? Did the manner in which WordPress handles Archives change in the last two revisions?