Hello, I just subscribed to this list because I just got a used G4 M8573 and I am having a several very mysterious problems - two of which I have definitely solved. The OS for this computer is 10.5. I had the "jumpy mouse" problem with an optical mouse that came with the computer and I switched to an old fashioned ball mouse. I never have had any more problem since I did that. The second issue was with my printer - an HP 4Plus. Every time I would print something, it would print an extra sheet with always the same error - OFFENDING COMMAND.That was an unnecessary waste of paper. I switched printer drivers from what was installed for my printer to another driver in the database and I never have had that problem again and my printer is back to normal. The problems that remain to be solved is 1) I also purchased a monitor that doesn't work with my computer. The HDI connector works fine with an ViewSonic monitor but the new monitor which has an ADC connector doesn't. I don't know if it is the monitor or the computer. Nothing lights up on the monitor, so I am assuming there is no power getting to the monitor. I have called a repair shop and for only $79.95 they will check it for me immediately. I don't want to spend the money, because I already have a monitor that works plus a monitor with an ADC connector that at this point is surplus, because I don't know if it works or not! 2) The other problem that I am having is with the DVD RW combo unit. I cannot seem to get it to recognize ANY DVDs - even pre-recorded ones, much less burnable ones. It tries to read them for a while and then always spits them out. Leopard recognizes that the drives are there, but I can only read from the CD drive Does anyone have suggestions for me to try? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://listserver.themacintoshguy.com/pipermail/g4/attachments/20100527/34d46ede/attachment.htm>