I found zentracks to work very well for my work orders/ pending problems. [link removed] . I had to install php5 as a cgi for the ibay to get the latest 2.6.3 to work, but I think it was worth it. Zentracks has a lot of customization capabilities if you can spend some quiet time thinking it through and setting it up. Once up, it works very well in my opinion.
Note: The incorrect link provided in this post for zentrack has been removed, it may lead to a malware site.
The correct link is:
www.zentrack.com - refer reply #6 of this thread.