Upstream is discussing whether or not to adopt HS 11 or go straight to HS 14, which has already been integrated into IcedTea6 and is the default build now (adopting HS 11 might be too much trouble since a lot of fixes and ports to other platforms would have to be rebased):
http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2008-December/004114.html

Note that in general whenever major bug fixes are found the icedtea team already does backport them.

This will be in rawhide within the next couple of days. I am going to keep this bz open until it gets updated in F10

java-1.6.0-openjdk-1.6.0.0-9.b14.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.