Mac OS X Server 10.6.8 running OD with remote home folders for users. Create mobile accounts is turned off.
I updated five laptops to Mac OSX Mavericks. When an open directory user logins it downloads the account information from the server each time. So every time you logon to a Mavericks computer it thinks it is for the first time and begins cataloging the local drive for spotlight. Which takes forever and makes the computer run painfully slow.
I added to the local hard drive to the do not search list in the Spotlight cdev. It still catalogs each time you login.