WPMU Seo plugin is creating core.#### files

After upgrading to the latest version of InfiniteSEO, I started seeing files generated in my public_html directory plus my WP dashboard shows 1 plugin needs updating, but nothing is showing with the update link. This is occurring on blogs using the blog/#/ format (subdirectory) and I had ten sites hit their quota in a matter of minutes after upgrading this plugin.
Granted, I did have other SEO plugins installed, but even after removing them, InfiniteSEO was still creating the core file dumps.