[HELP] How to remove duplicated shortcuts on the bottom panel? in Classic gnome - OpenSuse 12.2

I am having an annoying issue with shortcuts. I have a duplicated set of shortcuts. you can see the image to have an idea of what I am having. my question is: is there anyway to remove some of them? as I tried right-click but there is no delete option.

http://s10.postimage.org/wmssmztqx/Screenshot_from_2012_11_30_10_09_26.png(VLC and chrome shortcuts are duplicated in in Classic gnome - OpenSuse 12.2).

after a search. I found it and it’s (ALT+Right Click) on icons whom I want to delete.