[Product-Developers] task/time tracking for multiple client projects

[Dylan Jay]

Keeping track of multiple concurrent jobs with regard to task lists, 
scheduling and estimation is becoming a pain for me so I'm looking for 
simple solution.
What do you guys use?

Must haves are:-
- single task list for multiple projects
- ability to put in estimates for each task
- ability to put in actuals for each task once complete
- some kind of project management tools to see whats going on in a 
project like completion estimates etc.

Nice to have:
- svn integration
- support tickets - perhaps email in with ticket id returned. tickets 
associated with existing tasks or create a new one.
- fine grained security so I show clients only only what relates to 
them, and even developers only what relates to them.
- easy to install

Trac seems to be a popular choice. does anyone use it with time tracking 
and trouble ticket plugins?

Dylan