Workflows / Portals not behaving the same

[Rick Sample]

SAP 4.6C / Portals
 
I have some WFs that are not behaving the same way in Portals as SAP
GUI.
I need to get educated real quick!
 
When the Task is executed in Portals, background tasks don't seem to me
executing correctly.
i.e. the next User Task is not being displayed and the background Tasks
does not execute correctly.
 
When the user enters via myWorkplace (gets into SAP GUI) things run
fine. Just does not work if the
user attempts to execute via Universal Inbox.
 
Some pointers?
Known issues?
Links to some "How-to" with dealing with Workflow via Portals?
 
Thanks!