We've been managing JRE since 7 Update 6 via Group Policy, have not appeared to have any Java related issues.
Since deploying Update 10 as an upgrade it is broken on every single PC. Attempting to load anything with Java says you don't have the plugin. Attempting to open the Java control Panel tells you:
"Java Virtual Machine Launcher
Error: could not open 'C:\Program Files\Java\jre7\lib\i386\jvm.cfg'"
Where do we even begin to find out why this is broken? From the deployment time there are no errors in the installation, all Application and System logs point to the previous version being removed and the new installed with no issues. There are no errors or warnings whatsoever regarding the deployment, but obviously it's broken.
How do we find what's happened and how do we fix this ASAP?