Out of curiosity i wanted to see how many applications my 13" mac book pro 2010 could handle with 4GB DDR3 Memory. Now upon appearance on activity monitor i had active and inactive ram. Which is believe is a normal experience a mac determined where the ram is best used. I therefore then decided to open many (being about 10 applications) on the mac book to see how it would handle. Now it seems to have used all of the free ram available but absolutely none of the inactive ram and in result the experience became seriously sluggish and slow like you would if you didnt have enough ram. Now i cant determine why my inactive ram hasnt been used which remains over a GB of the total memory, i have attached a screenshot. I hope someone can help because i dont expect this form such a computer. Sorry i was typing this whilst on a phone call apologies the title should read: Inactive RAM causing many issues with many programs being opended 2010 13"