That failure has been seen while testing JDK 7 b29 from /net/bonsai.sfbay/w/builds/jdk/7/pit/b29/bundles
It's about the 64 bits Server JVM.
Failures have been seen on Windows 2003 and Vista (but not on RedHat 5).
That defect is perhaps another form of the 6711083 ?
Note that on the contrary to what've been seen with the 6711083, adding -XX:-UseCompressedOops doesn't solve anything.