This has been mentioned in another thread, but I'd like more comments on it... The base model has 1gb ram and 128 shared with graphics card, the premium (!) model has 2gb of ram and 256 ram shared with same graphics card. Does anyone know definitively if a base model with 2gb ram will then use 256 ram? I've asked Apple sales people and they are clueless - they think it's fixed! They even sold me it soldered on the board... I think not, but would like some other opinions. Would the 256 be allocated automatically or would it have to be configured somewhere* cheers, a. * Sorry if this is a naive question, this will be my first mac for 10 years so I'm a bit behind the times...! Not used a mac since os8!