Yes, for almost 24 hours (June 29/30) WindowsTalk was down, and it turns out it was not my web hosting company. It was a plug-in, possibly the Yet Another Related Post plug-in. I say possibly because disabling it seems to have cured my blog’s ills. I thought it may have been the Sociable plug-in too, so I had disabled it as well. However, reinstalling Sociable went well and my blog is behaving so far. I received an error message when attempting to reinstall YARP. I instead installed Possibly Related Recent Posts which seems to be working well too.
Tech support recommended installing a database caching plug-in as well, so I installed WP Super Cache Manager. So let’s hope all this tinkering will turn out for the best!