Trailing slash after blog urls

I've implemented the domain mapping plugin, but it looks like all of the blog URLs that are being spit out have trailing slashes when by default WordPress ones do not have them (e.g. bloginfo('stylesheet_directory') should not have a trailing slash).

This isn't a particularly site breaking issue as the URLs will still resolve after being forwarded by WordPress to the correct location, but it is causing a bunch of extraneous HTTP requests to occur while the browser is being redirected to the proper location. I'm going to leave it be for now, but it would be nice if you guys resolved that for consistency's sake.