In February I bought a MBP 2.4GhZ, 160GB HD, 2 GB RAM.....I bought to make a fairly involved movie that I am making. I am about half way through and all of a sudden it started getting REAL slow on me....almost unusable...renderings take way too long, even moving along the timeline takes a while....this wasn't the case for the first 5 months, but all of a sudden... I noticed my HS space is down to 40 GB from 160GB...Is this the reason? Additionally, what are some solutions to the problem? Will buying an external hard drive and storing all files on there free up enough space to make it run smoothly again? Help!