Bundles tested:
- 6u5 b02 promo
- jre-6u10-plugin2-windows-i586-p-05_nov_2007
- 6u10 b07 JRE bundle

Platform: WinXP pro, English
Test run: yokogawa test YokogawaTC4_001
workspace: deployment_mustang_UR_int_exec_ws

with new plug-in, a 24 hours run
handle count grow from 540 to 123,465

with old plug-in, a 24 hours run
handle count grow from 643 .. 61,826

Please see more comparison data in Comments field
Notice the range is much small with 6u5 b02 promotion build