Problem 2 is solved. It was a problem with my hosting service.
Problem 1 is the picture issue is solved but still some problems with my sidebar. The pictures aren’t on each other anymore but the the are under the page. Only in IE again.
I changed something in the rights and now he can’t find my blog (i tried in firefox and in ie)
so no errors on the screen anymore but an error when it has to load.
Wordpress dashbord is still possible to come in.