Favorites folder dissapearing

There is an ongoing issue with Mac OS X when the Favorites folder disappear without explanation, randomly, on certain users (Upgraded Mac OS or fresh installations)
Im assisting an user presenting the issue, and the correction found online involves to run this one-liner and sometimes reboot afterwards.
cd ~/Library/Preferences && sudo find com.apple.finder.plist* -exec rm {} ; && killall Finder

Im not versed on the internals of Mac OS but it seems that the finder.plist file somehow gets corrupted and/or permissions are altered and cannot be read by the OS (even thought sometimes the Favorites show on the Finder but not on the File Picket inside the apps, such as Word, Excel, Photoshop, etc)

So, so far, the users run the one-liner every time the issues shows up, and they reboot.
Very annoying, but if they dont do that then they are forced to dig inside the HDD all the way until they find the intended folder when they are trying to open/save a file, also very annoying.

Im thinking there has to be a way to script all that work, perhaps catching when the plist file gets altered or corrupted and then replace it with a previous copy or perhaps resetting the permissions if thats the problem.

I ask respectfully for suggestions, not sure if anybody has seen that issue or there are some ideas on how to attack it.
Thanks!
MANNY