The overlapping of right-side labels and the ads and links is a
problem with right-side labels, not the themes.
The GMail-Labs-Right-Side-Labels group has several threads on this
problem. It's not consistent (this message does not have the
problem), but fairly frequent and common. (if you haven't guessed, I'm
using RSL too)
--
Gilda Radner - "I base my fashion taste on what doesn't itch."