Mac OS X 10.7.2 macmini4,1 (NVIDIA GeForce 320M 256MB)
Running AntialiasLCDContrastTest.java you may see strange flag-like artifacts by the baseline of bold italics Arial. Also, all Arial tests fail, however some of then without such a visible distortion.
I use mac port of jdk7 b227

$UTE_HOME/bin/ute run -jdk $JAVA_HOME -component 2d \
-testbase $HOME/170_int_ws/2d/ -harness dtonga \
-results $HOME/170_int_ws/2d.results \
-testlist $HOME/170_int_ws/TL/2d_al_co.tl \
-stablejavahome $HOME/7u4/b227/Home -env BASEBUILD=$HOME/7u4/b226/Home

where 2d_al_co.tl is

#AntialiasLCDContrastTest
test.case.name=AntialiasLCDContrastTest
2D_Font/Testcase dtonga "1.6.0,pit,AntialiasLCDContrastTest"