There's an old locked thread about it here: http://www.lucasforums.com/showthread.php?t=154296
Here is the fix: http://www.lucasforums.com/attachmen...1&d=1130303686
Created by Darth333
It is suppose to fix the bug in Juhani's side quest where if her and Xor talk before you have gone to the Leviathan then Ziagrom will never approach you and therefore you will never get to talk to Mika Dorin and see the premium items at their shop on Korriban.
I was wondering if anyone was familiar with this bug and that specific fix. If it doesn't work I'll just have to keep Juhani on the Ebon Hawk until after I speak to Ziagrom, but it would be nice if I didn't have to worry about having her in my party. If anyone has used this fix please let me know if it works.
EDIT: In the Readme for the fix it says "This mod will fixes the problem with the second encounter with xor (Juhani plot)
that was responsible for making Xor spawn only when using the Rapid transit system" so I'm not sure it will fix the problem with meeting Ziagrom as I originally thought. If it doesn't fix this and you know of another fix that does I'd love to hear it.