Only a little more than 2 years ago, I got my first mac in April 2005, a 1.8 GHz iMac G5 with 1GB of memory. Now, it's pretty much obsolete (for what I'm using it for). I can't run everything I want to run. I have trouble with leopard, my computer is a bit slow, quits, can't run the latest apple software (e.g. iMovie, iChat backdrops), etc. I know the reason is probably because apple switched to intel, so powerpc computers are left in the dust, but if I buy the new 24" 2.8 iMac now, will it last me 4-5 years?