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Hard drive disappeared after 10.6 update

Warning: SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAgent" has been modified and will not be repaired.

Scotty,

Every couple of weeks or so, I run Disk Utility and Repair Permissions, and I have been getting the message above. Two questions: is Repairing Permissions neccessary?, and is the above line something to be concerned about?

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1. While repairing disk permissions is not necessary, it is very helpful to do on occasion. As files are moved around on your system, the permissions can change. This could lead to problems writing or reading the file later. Repairing permissions is a preemptive action that can help avoid problems like that from occurring. 3rd party installers such as HP print driver installers often install files that start off with the wrong permissions. And disk utilities’ permission repair will take care of that as well.

2. ARD is Apple’s Remote Desktop software. You don’t really have a need for it as it is not something you use. The file is damaged and can not be replaced without either a very careful drag and drop from a known good version of the OS from a similar build on another computer or a reinstall of the OS. This is not causing any harm and is perfectly fine just sitting there until an update resolves it down the road or you reinstall at some point for other reasons. I wouldn’t worry about it.
This image is a theme.plist hack