Jusched.exe

This process is the Java Update scheduler
To stop it from running
1.open up Control Panel,
2.n XP you can click on the Java icon, or in Vista you can click on Additional Options, and then click on Java
3.Once you have the Java Control Panel open, select the Update tab, and then uncheck the box for "Check for Updates Automatically"

Note:
You'll receive a warning message stating that if somebody finds a security hole in Java that it will take up to a month before you are protected from it

Schedule Java Update Check (Optional)

Just type in Task Scheduler into the start menu search box to open the task scheduler, and then click on Create Basic Task.

Follow the wizard along to pick a month and date, and then when you get to the "Start a Program" screen, use this as the path, adjusting if you are running a different version of Java. The key thing is that you run the jucheck.exe in your Java directory.

"C:\Program Files\Java\jre1.6.0_01\bin\jucheck.exe"