My blog (www.free-from.com/blog) was working fine until I upgraded WP - since then I've realised that the links in my sidebar (archive, category and related posts) aren't working - I just get the first page again. And according to my logs, visitors following a link to, say, a christmas cake recipe posted in October, are just getting the first page (November) too, and can't get to October.
I've checked my permalinks, and tried setting them again to friendly links (though I notice that somewhere along the line the system forgot to use the friendly links, and I've got numbers in my recent posts - is there a way of resetting these?).
I've tried looking at the .htaccess file too, as recommended in other requests for help, but don't really know what to do with this, or what it should look like.
Can anybody help? What have I done wrong? I'm going to try switching off all my plug-ins one-by-one to see if that helps ...