Quote Originally Posted by momesana
Unfortunately, only customers of trolltech have Task Tracker accounts, making it possible for them to submit Feature Requests etc. At least that's what the Task Tracker FAQ says:

At the moment, all customers with an active support contract have an account for Task Tracker. For the future we plan to provide an account system that allows anybody to create an account.
You can report a problem without an account, just click on "Open a new task".