Hi guys, I am new here and glad to have found this site! Even though it will not work with the Opera browser? I am somewhat green and you will probably be hearing from me often. I know all you computer wiz's are already laughing but wait there is more. I have an iMAC Power PC G4 20" flat panel unit with SuperDrive, 768mb of memory and thinking about going to 2GB. Running version 10.3.9 Panther, now I know your really laughing! I have had it since about 2004 and really like it even though I know it is somewhat out dated with the intel core 2 duo processors now a days. Anyway, I am staring to experience some browsing problems and adobe flash player 9 problems just to name a few. After some research from what I understand, have found that I cannot upgrade adobe flash player until I upgrade my browser, cannot upgrade my browser until I upgrade my operating system and cannot upgrade my operating system until I increase the memory and perform a back up before doing so which I think requires an external hard drive? My question is: What would be the absolute latest MAC OS 10 operating system I can use with my current unit if I increase the memory to 1 or 2GB? Would I have to install Tiger then Leopard and so on to get to the latest operating system I can use which sounds like it would take up a lot of my memory? Or can I just go from Panther directly to the latest operating system I can use on this particular iMAC? When you are done laughing and catch your breath, PLEASE RESPOND!!!!! Thanks for you time.