I've been using the plugin for quite a while now, on several blogs, and the plugin has always worked perfectly.
Recently I started a new blog, and the thumbnails were screwed up. I got in touch with Silvo, and he responded immediately. He was able to fix the problem in a very short time. What a guy.
Listen up, you complainers: these plugins are very hard work to create and require a lot of the developers' time, and as they upgrade/update, problems are bound to happen sometimes. Just like in life, know what I mean? AND they have to make money somehow. Think about that.
Thanks again, Silvo! You rock!