The problem is not PNG. As stated in the comment from Ben Lowery it is a CSS issue. I am truly impressed by the fact that the good people at Bloglines actually found this post on my blog, read it as a bug report and actually fix the problem. Now that is what I call customer support!
I have quite a bit of readers subscribing to this blog through Bloglines. It seems like Bloglines has a problem when displaying pictures in the PNG format. All the slides in my previous post turns up with a very wrong aspect. I have changed the files to JPG and will keep using JPG in the future to avoid this annoying problem.
And while I am at it. I really recommend you to subscribe to my feed. I am not updating this blog daily, so checking back all the time to look for something new can be a bit boring.
You can sign up for my email update, or use any RSS feed reader to subscribe. You can read more about RSS here and find all links and forms for the subscription alternatives here. Of course I promise that you won’t get any spam!