Wierd errors after update to 2.7

When I try to add new post (post-new.php), I get this nice error message:

Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/sl.js) is not within the allowed path(s): (/home/username/:/tmp:/usr/local/lib/php/) in /usr/home/username/domains/my.domain/public_html/wp-admin/includes/post.php on line 1187
Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/sl_dlg.js) is not within the allowed path(s): (/home/username/:/tmp:/usr/local/lib/php/) in /usr/home/username/domains/my.domain/public_html/wp-admin/includes/post.php on line 1190
Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/en.js) is not within the allowed path(s): (/home/username/:/tmp:/usr/local/lib/php/) in /usr/home/username/domains/my.domain/public_html/wp-admin/includes/post.php on line 1194
Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/en_dlg.js) is not within the allowed path(s): (/home/username/:/tmp:/usr/local/lib/php/) in /usr/home/username/domains/my.domain/public_html/wp-admin/includes/post.php on line 1199
Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/sl.js) is not within the allowed path(s): (/home/username/:/tmp:/usr/local/lib/php/) in /usr/home/username/domains/my.domain/public_html/wp-admin/includes/post.php on line 1187
Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/sl_dlg.js) is not within the allowed path(s): (/home/username/:/tmp:/usr/local/lib/php/) in /usr/home/username/domains/my.domain/public_html/wp-admin/includes/post.php on line 1190
Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/en.js) is not within the allowed path(s): (/home/username/:/tmp:/usr/local/lib/php/) in /usr/home/username/domains/my.domain/public_html/wp-admin/includes/post.php on line 1194
Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/en_dlg.js) is not within the allowed path(s): (/home/username/:/tmp:/usr/local/lib/php/) in /usr/home/username/domains/my.domain/public_html/wp-admin/includes/post.php on line 1199

This error appeard after I updated my blog to 2.7.