Oups! Yes it does! The WP Super Cache. But I said that I am new to WP development. This seems to be the apparent explanation. I have seen other strange behavior that also can be explained of this. Now I will try to remember to clear that cache every time I want to see the result immediately after an update.
Thanks! This was very helpful!
This is embarrassing but I can’t reproduce it now. When I wrote the post above could I with both Firefox and IE on two different computers, as I didn’t trust my browser cache (but I emptied it also). Could there be any lag after changes are done? Anyway I can’t reproduce this right now but it works just fine! I should of course have provided a link already before and the problem showed on for example this page before http://blog.java.jonand.se/sample-page/ (which I will rename to /about soon)