From comments left recently on my Report Builder posts, it seems there is still a lot of frustration with ColdFusion Reporting generally.

I haven’t had a lot of time to play with it recently, but from what I’ve seen, the new 7.0.2 release and the Report Builder update that was released shortly afterwards really do make a lot of difference. So to anyone still experiencing problems, I would recommend that you make sure you are running the very latest versions of everything.

After that, if you still experience bugs, you need to report them to Adobe. They’ve been very responsive to my issues, so there’s no reason why they won’t be responsive to yours.