LDN - Luminis Developer Network

I came across this weird error in the portal:

[2011-06-22 16:17:40,572] [ERROR](LoginServlet.java:307) {http-443-17} [com.pipeline.portal.LoginServlet]: Login attempt for 'acantu' from 10.1.112.28
[2011-06-22 16:17:40,573] [ERROR](LoginServlet.java:310) {http-443-17} [com.pipeline.portal.LoginServlet]: Login Denied: Stale login request.

An email from my one of my user express pretty much what weird behavior we are experiencing...

As our school's Luminis go-to guy, I've become involved in a new project (shopping cart system) that does not use Luminis as a platform but will be more successful if we're able to leverage a couple of Luminis' features: authentication and SSO.

Hi...I'm new to this forum.  I'm a web developer for a university that uses Luminis for the student/faculty/employee portal.  We are interested in creating a native iPhone app to access, among other things, some portal content.  I am able to generate a successful login, but the session does not maintain.  Are there others out there who have experience with this issue?  I was able to get a simple form and set of related pages to maintain session across the pages from the app, but the same code base does not maintain session when applied to the portal.