Cumulitive Updates for SharePoint 2007
The Office Team has made an announcement on the SharePoint msdn blog explaining the new methodology that will be used for cumulative updating (or hotfix resolution) here: http://blogs.msdn.com/sharepoint/archive/2008/09/29/announcing-august-cumulative-update-for-office-sharepoint-server-2007-and-windows-sharepoint-services-3-0.aspx
Keep in mind that this is only for if you are experiencing issues that are resolved by these hotfixes and that SP2 for MOSS will include this cumulative update (and any up until the SP2 date).
There should be a new update every two months (cumulative) so keep your eyes posted and make sure to read over the hotfixes to see if any apply to some issues you may be experiencing.
Best of luck,