I noticed and error on the right side of my blog where one add should be. It says:
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 235726 bytes) in /home/uno1093/public_html/wp-includes/class-simplepie.php on line 13070
There should be a similar photo slideshow like you see above.
I upgraded my wordpress to 2.8.4 but nothing changed.
I had a look at the file in question and it says: SimplePie bug! Please report this!
Thanks for your help!