how to get a clipboard manager onto the top panel in unity in 12.04

[user1]

I tried a lot and now reinstalled clipit.

I have added it to 'startup applications' and logged out and in again

In Clipit - Preferences - I have unmarked 'Use Copy (Ctrl+C)' and marked 
'Use Primary (Selection)'

And now it works :-)

But klipper, glipper or parcelllite did not work for me

By the way I am using Unity 2D