time machine backing up when pref is turned off
I noticed yesterday and today, after replacing my TimeMachine with a new one, that even though I had temporarily turned off the Time Machine backup in my system prefs because I didn't want it running while I was editing a video, it will still backing up. And backing up a huge amount of data. A Google search using "time machine backs up when turned off" as the search phrase led me to: <http://toti.posterous.com/hidden-local-backups-with-mac-os-x-lion-filli> in which I learned that TM is doing local backups to my laptops' hard drive. Don't want this, but as usual Apple is assuming most people would welcome this safety feature and so don't offer (a) information on it or (b) the option in system prefs to turn it off. Anyway, on that page there is a command for the Terminal which will turn off this feature:
sudo tmutil disablelocal
One could easily be fooled into thinking your computer had less disc space than you actually have due to this feature. Pretty well everytime there is a "smart" application within the ever expanding OS, there is a downside to it. If only there was an "I'm no dummy" mode which would allow users to tailor various features without mucking about in the Terminal, which I know little about and try to stay away from, except for the occasional "fsck -fy" command at startup.
MacBook Pro 13-inch, 2.26 GHz, Mac OS X (10.6.3)