I haven't used Zenphoto for a while and I'm looking for a cms/gallery that can fill a few requirements for a site overhaul I'm doing for a friend.

It's a photography community with a few thousand members who share photos.

Requirements
- User groups
- User created gallerys+private galleries
- Ability to show "newest user uploaded images" on the front page
- Forums

Can Zenphoto do this? I know there are many plugins/mods available but I also know how quickly plugins/mods can stop working when a new CMS version comes out and I'm not familiar with what works and what doesn't.

http://www.zenphoto.org/index.php?p=news&title=features

So in short:
- User groups -> Yes
- User created gallerys+private galleries -> Yes (rights assignment only to top level albums)
- Ability to show "newest user uploaded images" on the front page -> Yes
- Forums -> No, there are really a lot specialized forum CMS out there.