I like the component. Works great. I have been working wtih PHProjekt and I like this one better, since it integrates with my Joomla CMS instantiation. It is an excellent extension that I can use for managing work with my fellow developers. Excellent features are the importing of Joomla users.
The only difficulty I am experiencing with it is with the date management functionality in the task manager. If I put in a specific date, it defaults to the current date when I save a new/modified task. (v.0.6.7)