However, be careful not to put the Idle Job Timeout too low as it will affect user's ability to page through reports. Say, for example, that you set it to 1 minute. If a user is viewing a report and gets a phone call that lasts more than a minute, this setting might cause an error when the user tries to go to the next page of the report.
So, you'll need to find the right "balance" in terms of where to set this. Most of my clients never change it from the default value.
-Dell