I second what eru said (sibling post). Your bottleneck is most likely not the CPU but the RAM. Get some activity monitor (e.g. iStat menu) to see what's really

I second what eru said (sibling post). Your bottleneck is most likely not the CPU but the RAM. Get some activity monitor (e.g. iStat menu) to see what's really going on, I bet you're running low on RAM and the OS is swapping - which is the surefire way to bring everything to a crawl. If you have the spare change then upgrade to 8G Ram (only possible in latest macbook generation I think) and a fast SSD (intel). I'm pretty sure you will have nothing to complain about with a 13" stuffed like that.