Hey guys, was wondering if any of you are familiar with web-based task-tracking software. Since I got a real job, I don't spend time on the mud like I used to, so I figured having a way to organize my projects will help me be more efficient at building/coding, since the forum doesn't cut it.

Here's what I want:
* PHP / web based (need to integrate our user system with it)
* can assign tasks to:
* * * specific users: (I said I'd fix something, so assign it to me)
* * * groups of users (coders, builders) / generic queue
* public / private settings (assigning a building project would be private, a bug would be public)
* due dates
* priority

Any recommendations? I've only been having mediocre luck so far.