I found a solution for us to have stack docklet with OBJECTDOCK that doesnt have any problem.
1. download the "Standalone stacks2" thru this link http://www.chrisnsoft.com/download/langswitch_lang/en/#standalonestack
2. extract it into your program files
3. run the standalonestacks file in that folder
4. follow the instruction how to create a stand alone stack, its very easy just the same as creating it in objectdock
5. make sure to create a shortcut anywhere(but for me I created my shortcut in my desktop)
6. after you have created the shortcut in your desktop, drag it to your DOCK
7. then just customize the name and image of it and it doesnt Freeze OBJECTDOCK
........hope this helps...........