I have a mid 2007 iMac running Lion with the 2.8GHz Intel Core 2 Duo processor and 2 GB of ram. I'm finding it kind of lagging in speed, sometimes it stutters and it can take a while for it to start up and open programs, nothing unusual for it's specs but I would like it to be faster. So my question is would it help to increase the ram to 4GB? I don't do a lot of multi tasking so I'm not sure if adding memory helps in this situation. Thanks in advance for the advice.