I installed OOo 3 on VL6a2 today and got the same "missing dependency" message as toothandnail. I had GSlapt install it anyway and ignore the dependency. I was afraid of breakage if I had installed kdelibs-3.5.10 (I have kdelibs and kdebase on VL6).
I ran OOo Writer and OOo Calc and they seemed to work fine. I didn't give them a hard workout, though.
One thing I noticed was that OOo3 Writer is finally displaying ITC Officina Serif correctly. In earlier versions of OOo for Linux, Officina Serif did not display or print correctly. All the other fonts did. This problem did not happen in OOo for Windows.