Safari 5, networked users = a world of pain?

Question

Since upgrading to Safari 5 on the computers at the school I work at, when logged in as a network user S5 quits on launch. On local users, it loads fine (on the same computer), but networked users on the same computer cannot load it. We use an Active Directory network with Centrify to link the Macs into the Windows network, so Applecare are hesitant to touch this. However, they have also informed me that this is also a problem with Mac OS X Server.
I have tried to go back to Safari 4 since this was working fine, but after removing all known traces of safari 5, I still get the error message telling me I am trying to install an older version, when a newer version is already installed. I also tried re-indexing, just in case the installer was picking up on "phantom" files. I removed the bom files, the prefs, the caches, the safari folder contents & it still will not let me reinstall S4....
Short of reinstalling the OS on over 100 computers, what else can I do???

Answer 1

Hi
use Pacifist from http://charlessoft.com to install the 4.0.5 update or Unpkg from http://www.timdoug.com/unpkg/ to do much the same thing.
or edit the webkit version plist which is tested by the 4.0.5 install script to see if a later version exists already - then it will work.
Really, Pacifist is the easiest way, so long as you're satisfied the Safari 5 install changed nothing but what will be replaced with Safari 4.0.5