Apple and TimeMachine

I love Leopard! Single best upgrade I have done this year for operating systems. Vista was obviously a waste of time and Gutsy was incremental over Feisty. One thing that I have been throwing my head against the wall with is using IMAP Gmail. I screwed up my settings and have gone through deleting the Mail in my Library and Preferences, yet no matter how many times I deleted the settings were still there. I then ran from console and sure enough, time machine was automatically restoring the settings. While in any other case this would be great and a huge boost to a home user. A power user it just bugged me. The process is to remove backups from your timemachine disk. Just a heads up