I just purchased an unlocked Treo 650 GSM on eBay with a warranty and within 24hrs it started producing a wrong letter when I select a different one. This only occurs with the U, J, and N keys. Instead of producing those, it produces Y, H, and B - the keys immediately to the left of the corresponding desired key. Is this a known bug or issue with some Treo 650's related to software, and can it be fixed with an update or upgrade? Or is it a possible hardware/keyboard related issue that must be fixed by replacing the keyboard? I've already performed a soft reset, and a warm reset (followed by a soft reset).