I'm posting for my dad who has noticed his mid 2009 macbook pro slowing down a bit lately. I'm pretty sure it's the base model, 2.26ghz intel core 2 duo processor with 4gb of RAM (which he upgraded from 2gb at the time of purchase). I think it's running Mavericks. He really doesn't need a new computer considering all he uses his for is browsing the web, checking email, and playing free cell, but he has noticed some lag lately and it's bothering him. I'm not great at handling stuff like this so I told him I'd post here and see if anyone has suggestions for speeding the computer up. Any suggestions would be great.