This problem is still present with the new version of Object Dock - if you move your cursor over the dock, the dock at the non-expanded regions jitters back and forth (the nonexpanded regions of the dock should remain totally fixed)
I've seen this present itself with my other computer so it does not appear to be a video card issue.
This is present with using the default settings (probably more noticable with LCD monitors)
Any ideas? or is this a coding issue?