I purchased my Blackberry Tour on August 7th from VerizonWireless, and as time passed the tracking ball gradually worsened. The trackball worked fine scrolling up and down, but major problems(lagging and skipping icons) scrolling either right or left. I took my phone to Verizon and explained the trackball issues. The technician was aware of the issue with Blackberry Tours and immediately opened a trouble ticket to have a brand new BB Tour shipped to me. According to the technician, the first batch of BB Tours released in July/August were produced with defective trackball apparatus and RIM were aware of the issue. The newer produced BB Tours should not have that issue. Good Luck everyone!!!