hi all, I'm using the 13" MacBook Pro (mid 2010 model) with the 2.4GHz model and 4GB of RAM, which is connected to a 30" Dell 3007-WFP LCD monitor. Whenever I am editing my photos via Lightroom, the performance of the MBP slows down drastically. Therefore, I went to check the Activity Monitor and realised that i had only 70MB of free RAM. If I quit Lightroom, I will have up to 1.7GB of free RAM. The question I would like to ask is that whether this is because I am using a 30" LCD with a screen resolution of 2560x1600, hence using a up a lot of RAM? I would greatly appreciate if anyone with a similar setup as I have can enlighten me on how to boost my MBP's performance. Thank you!