Been trying to sort out an ongoing intermittent problem on with my G4 flat panel iMac for some time now. I get kernel panics and display problems - the screen starts breaking up into thin horizontal lines at times. I've run the Hardware Test several times (including loop mode overnight) and got an error code only once: disp/13/3 - problem with video ram. Thing is, the problem doesn't seem to show up when I run in Safe Mode, which I've been doing for extensive periods the last while. This leaves me thinking it may be a software problem (I don't know much about this, so correct me if I'm wrong). I tried upgrading from 10.3.9 to Tiger - didn't solve the problem. Would like any input on the possibility that it is a software problem, also on whether an Archive and Install or an Erase and Install might work better than the upgrade I tried. If so, I'm really hoping for some indication that an Archive and Install will have the same potential effect as an Erase and Install, because I'm way too busy right now to deal with an Erase and Install unless I really have to. Any input on this greatly appreciated, thanks in advance.