Existing users, 
TimeMachineEditor
Change your Time Machine backup schedule & more.
Version: 2.5.1
Has no effect in Snow Leopard
Feedback Type: Review
Contributed by: AUsher Saturday, August 29 2009 @ 09:39 AM PDT
Product Platform: MacOSX
Used Product For: Less than a month
Although this app does the same thing in Snow Leopard as in previous OS versions - modifies the plist file com.apple.backupd-auto.plist - time machine seems no longer to consult this plist, and therefore changes made in TimeMachineEditor have no effect on time machine in Snow Leopard. At least that has been my experience - please correct me if I am wrong.
Comments
Has no effect in Snow Leopard - tbux
Works for me in OS X 10.6.1. Is a erratic but for some reason if you launch and leave TimeMachineEditor open, then the backups are more regular.Tuesday, September 15 2009 @ 05:44 PM PDT
Has no effect in Snow Leopard - timesoftware
On Snow Leopard, Time Machine always backs up when waking up from sleep and connecting a laptop to a power source.I'm working on it.
Thursday, September 24 2009 @ 04:49 AM PDT
Has no effect in Snow Leopard - JohnnyBuck
I have had the same experience as you. Since upgrading to Snow Leopard, it doesn’t seem to work as it did before.Reply to This
Friday, September 04 2009 @ 05:15 PM PDT