For those of you on 1and1 hosting and running WordPress, you’ve probably run into a few problems with PHP version 5. 1and1 isn’t running PHP5 by default yet, so to get it to work, you need to create an .htaccess file with “AddType x-mapp-php5 .php” in it, to force php files to be processed as version 5 instead of 4. This fixed the problem I suddenly developed when uploading pictures to posts.
Images & blather