S10U1 b19 x86 and sparc, GNOME2.6. jdk1.6.0 b63(manually installed)

reproduce steps:
1. launch -> Preferences -> Accessibility -> Assisitive Technology Support -> check the Enable assistive Technologies
2. logout and re-login
3. start javaws from terminal by javaws -viewer
4. (install an application before this step) lanuch an application by clicking the start button (such as draw)
5. the application starts but can not quit
6. if just closing the application viewer after it starts
7. the Java Control Panel can not close

The application can quit correctly when launch it from mozilla.
This dose not happen with jdk1.5.0_06.