tex8vc - the QT interval reported by the machine is certainly a lot higher than those patients in the article I posted. I agree 100% with rhovsquared that you have to take ECGs with a grain a salt, especially Dr Hewlett Packard's diagnoses. I honestly don't think you have anything to worry about, but I think that whenever anything potentially abnormal is thrown up, a specialist should cast an eye over the ECG and the patient to make sure. I have lost count of the number of times when I have had to get a cardiology opinion on an "abnormal ECG" which has turned out to be nothing, but just occasionally something needs further investigation and/or treatment.
Also agree that you should have electrolytes tested and any drugs (although I imagine you are not on digoxin).