I know I am jumping the gun a little posting already, but I am wondering if any of you have ever experienced this. I am still trying to determine if it is my monitor or my computer causing this problem (need to get my hands on another display to test it - easier said than done). I have a 1.5 year old Power Mac and a 1.5 year old LaCie electron19blueIV monitor. Recently, I've started having a flickering line of light that starts about 1 inch from the bottom of the screen. It is intermittant. Seems to come along when I've been using the mouse (as opposed to typing) but that could be my imagination. It gets worse sometimes to the point of my screen jumping (but not flickering so much as hopping a few times). I unplugged my speakers, my wacom tablet, and anything else I could think of. I changed my refresh rate. None of this affected it. The only other change was a power outage a few weeks ago (but this didn't start till a few days ago, and of course I am on a surge protector!) My monitor is under warranty but what a PITA to have to mail it in, especially if it's possibly the computer (video card perhaps??) So I'm curious if this sounds familiar to anyone out there! Thanks in advance!