thanks a lot for your posting.

And, even though it may sound odd, I'm interested in bug reports just 
alike ;-)

1. + 4. Fixed in the just released revision (available through the 
online update).

2. + 3. These sound like errors in configuration.

2.) Please make sure you actually use the intelligent folder and not 
a regular folder in your menu configuration.

3.) It's a small but fine difference in OS X whether you drop 
something on an entry or below an entry. Dropping something on an 
entry here will use almost any artwork for the folder that you can 
throw at it. Dropping something below (so you see just a line below 
the folder's entry, but still indented) the folder's entry will add 
it to the folder.

Hope that helps.

Best regards, 
Felix