I support staff and guests at 5 hotels around NZ and use the free edition of ManageEngine ServiceDesk Plus (http://manageengine.adventnet.com/products/servic e-desk/download.html?free) which is by far the best system I have tried (RT included). It can also integrate with their network monitoring tool which is a bonus. It was easy to implement too, and can import user lists from AD (and yes I did see you mention Linux :P) Jay