I just got off the phone with a customer who was trying to upgrade the Fast Secure Contact Form plugin to 188.8.131.52. She has two WordPress installations and while the upgrade looked like it worked, there was a problem each time.
What happened with her site? She’s using the plugin to make a contact form in every page of her site. The broken update caused the pages to hang as they were trying to load. About half the time the pages of her site wouldn’t load at all. I reinstalled the plugin and now things are back to normal.
I do not recommend updating the plugin at this time. Hopefully the people who make the plugin will fix this issue and release a new version.