I heard that there'* been a settlement in the DexCool case against GM. For those who've replaced UIM and seals on 3800s that looks like some compensation (at last):
"2. A coolant sealability repair (including, but not limited to, throttle body gasket, upper intake manifold gasket, lower intake manifold gasket, etc.), made within the earlier of 7 years or 150,000 miles of the date of initial delivery for 1995 - 2004 model year 3.8-liter V6 engines (RPO L36) that were originally equipped with Dex-Cool coolant."
from the site http://www.girardgibbs.com/dexcool.html