Originally Posted by schnide
Hmm.. well that's progress, even if they're not really doing anything about it! May I ask exactly how they told you this? Because it's not the standard thing for them to acknowledge there being an issue - most of us have been told "Well we've not heard of this before" even though they have.
If it helps you to have it confirmed, all reports so far suggest that downgrading does do the job but it does invalidate the warranty.
I received it through HTC Global Contact System and email support. I referred to Forum reports by many users across most networks having this issue.