I bought a Mac Pro just days after it became publicly available, shortly after the loss of my old iMac in a move across the country. Didn't do much research; may live to regret it; years' and $$'s worth of software will not work. But, aside from that.... My cursor frequently just flies off the screen. I've looked for patterns (Is the machine too hot? Am I inadvertently touching some wrong button? etc.) and cannot find a pattern. It is always maddening, but when I'm editing a photo at the pixel level and the cursor zooms off the screen taking a swath of pixels with it, I'm ready to throw the machine out the window and gleefully watch it plummet two stories and smash to smitherines on the concrete! What is causing this?? Am I alone? I did a search, but did not find a related topic. Also, the "p" on my keyboard won't make a capital using the left (normal, for a copy editor) shift key, only the right. And you have to use a hammer to get the tab key to tab. Just MY keyboard? Or has anyone else experienced similar problems? And, breaking the rule about one topic to a post, I also bought an Altec (I think; I'm not looking right now at anything that would help me get it right) speaker system and couldn't get it to produce sound, and, yes, I messed with settings. I ended up giving it to my granddaughter for her CD player. I hate the tinny sound, but cannot right now afford another speaker system... But, when I do, anyone have any suggestions? Cursor problem is cruicial; help requested. Thanks.