This has been previously reported, but no meaningful solution given. When adding an item, after step 3, the following error occurs:
Fatal error: Objects used as arrays in post/pre increment/decrement must return values by reference in /var/www/html/omeka/application/models/Item.php on line 172
This is on a CentOS 5.x box.
Omeka 0.9
MySQL v 5.0.22
PHP v 5.1.6
The image is added however.