If you have followed the Performance Tweaks for Large Systems article in the Sugar Wiki, you will know that updating the Free/Busy calendar information that is stored in Sugar can be a resource intensive task if you have a lot of meetings and calls stored in your Sugar system.
As of Sugar 5.2.0 patch C, we have added the ability to turn off updates to the Free/Busy information with a new System Settings switch. You will only need the Free/Busy information to be kept up-to-date if your company is using Sugar to store Free/Busy information for use with the MS Outlook calendar.
Learn more about this in the
New vCal Updates Setting in 5.2.0c Developer Blog post.