Man, computers are expensive...

Depends on what you're going to do with it... but regardless you can never have enough RAM but you don't have to get it from Apple. You'll get a much better deal elsewhere and it's very easy to put in yourself...

 

Does the iBook have more than 1 slot?

 

I second Blue's suggestion (btw, go to bed, Blue... really ). RAM is essential, and it's much cheaper elsewhere. You could upgrade with a 512MB stick for only a few $$ more than you'll pay to go to 512MB total from Apple.

 

1 free slot - 256MB is hardwired and not replaceable.

 

There probably won't be a significant update soon, and almost undoubtedly not one which would make you upset that you didn't wait. I think you're safe buying now. Seeing the incremental updates to the PBs, I doubt the iBooks will improve by much for months.

 

Historically, the iBooks have gotten updates like clockwork in October and April. That pattern's held for two years; before that, it was May and November. In other words, aside from a one-month adjustment, it's been twice a year forever. So if you feel like waiting till April/May, you could get an upgrade, but it probably won't be terribly earth-shattering. I'd say go for it now.