Crap! i ran disc utility and it killed 20 GB!

as i do every month, i ran my usual disc utilities today...these include disc warrior and booting from the mac os x install disc. as i do every month, i ran disc repair, then erase free space. when i was finishing erase free space, my computer bombed (it showed a dark black screen and said hold down the power key to restart, i assume the equivalent of a system bomb in 9) and i did. when it booted back up, i was at about 1.2 GB, so my computer took forever to boot. When i started, i had 23 GB! what happened, anyone know?
ben

Ben,
The concept of using tools for monthly maintenance is an old one. The only type of maintenance you want to do is backup, and then specific maintenance used to make sure updates you install won't go awry. By using a maintenance tool when nothing was actually wrong, you probably created a problem where none existed before. This is why it is vitally important you backup before you do any sort of maintenance. For more on the kinds of things you want to do when you upgrade, see my FAQ:
http://www.macmaps.com/upgradefaq.html
For more on a variety of backup options see:
http://www.macmaps.com/backup.html
I rarely do any other type of "maintenance" except if I need to troubleshoot a problem my system is having.
Disclaimer: Reference to links I make to my Macmaps.com website are a for your information only type reference. I do not get any profit from this page, and it is open to the public.

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    Permissions differ on "Library/Internet Plug-Ins/JavaPluginCocoa.bundle/Contents/version.plist", should be -rw-rw-r-- , they are -rw-r--r-- .
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    Hi
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    Thank you for taking the time to reply.
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    PB G4   Mac OS X (10.3.9)   PM G4 Dual 1.25, PM G4 Dual 867, OSX 10.2.8, OSX Server 10.2.8

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    Fordsflylow wrote:
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