Open Source Portal/Portlet container

[Alex Fishchuk]

Hi guys,
I reviewed a couple of Portal/Portlet Container frameworks but not satisfied with their flexibility.
I need the framework to allow pluggable implementations of content aggregation, security (SSO, Authentication, Authorization) etc.
It would be great if the framework will use IoC pattern (the springframework does).
Does anybody know where should i look for this kind of framework?
reviewed:
Jetspeed 1 and 2
Pluto
uPortal
jPortlet

if there are no such frameworks, I'd like to here what u think of developing a framework with these features:
1. Pluggable implementations (www.springframework.org) of the following:
- Presentation Layer/Content Aggregation/UI
(Tapestry, Velocity, JSP, plain HTML, RSS feeds)
- Security (Acegi Security for Spring)
- Portlet container (Pluto, any other JSR 168 compliant with pluggable
datasource)
2. Lightweight - runs on any Servlet 2.2 container (Jetty, Tomcat)
3. Simplified build/deploy of portal and container (hate to think that
i need to dig into dozen of properties files to make Jetspeed look like i
want).

[Dirk Schreckmann]

A bit off-topic...
Alex,
Have you written up and published your reviews on-line anywhere?

[Alex Fishchuk]

Dirk,
writing and publishing reviews was not my goal
My goal is to evaluate available products to see whether
the product suites my needs and expectations
I might write down and share my findings later on.
regards
Alex