Hey all,
In gentoo there is an java 1.5 ebuild, to emerge it follow these steps:
echo "dev-java/ibm-jdk-bin" >> /etc/portage/package.unmask
then go fetch the file from the ibm site and emerge the bugger.
It includes a plugin for mozilla (working here) but the plugin does have some issues when applets load com.sun.* packages that aren't installed on the system.
We are still working to get the ibm-jdk distributed by us again... till then we need to set the fetch restict...
greetings,
SeJo
ps: working apps:
eclipse
netbeans
aqua data studio
openoffice (even compiled with it

)
...