I've found that using the framework has significantly decreased my development time and really just given me cleaner, easier to maintain code. Of course, these are the goals of any framework. I do have a couple of issues I've come across and it is those I'd like to talk about.

The two issues he mentions were problems with the Zend_Db component (not everyone has just one primary key in their table) and caching problems with Zend_Cache (no unique lifetimes included).