This has just happened to a prospect, and I wanted to share the situation in case you ever come across it. First the prospect is using WordPress for their blog. They had recently moved to a new web host and mentioned to me that when you clicked the blog post title of any posts on their blog their browser returned a blank Internet Explorer page.
I have seen this before where a Word character such as a long dash or an ampersand has not set well with the version of MySQL on the hosting server and then the post needs to be deleted and totally reentered to make the title be clickable, but that was not the case with this client. The title of the posts were simply not clickable.
What ended up happening was that the client had to actually reenter all the blog posts on their blog after they had upgraded to a new version of WordPress. I am not sure if this was due to an issue on the MySQL server, the blog template, or as I suspect the permalink settings that were not updated to match the database when the blog was moved, but it was a very thorny problem.
If you have seen this and have a recommendation for other readers on what you have done to repair this issue on your own blog, just leave a comment below.