While we do have a few customers who have also gone back to JDK1.6 for one reason or another because they have modifications that depend on it, I would run NE with what we build/support - if you
must upgrade them please notify support whenever you/they open tickets that it's using JDK1.6
That open Sun bug is more of a load one, and we periodically examine the idea of going back to 1.6 whenever we long for a improvement that isn't in 1.5 - probably will after that is fixed, it's currently at status level 7.
1-Dispatched
2-Incomplete
3-Accepted
4-Defer
5-Cause Known
6-Fix Understood
7-Fix in Progress
8-Fix Available
9-Fix Failed
10-Fix Delivered
11-Closed
You can test out this irregularity if you'd like:
Bug 29631 - delay loading login page when using Firefox 3 over SSL/TLS (might already be fixed - I haven't tested lately)
Here was another annoying one internally:
Bug 17993 - Cannot build server using JDK1.6