My Macbook freezes after using it for awhile
I startup my MacBook (aluminum 2008 verions) running lion 10.7.1 and after about 5 minutes of using it, my computer displays the rainbow cursor and freezes. I am unable to click on anything or force quit.
My processor is 2.4 Ghz and has 2Gb ram.
It would be great if someone could give me any thoughts ASAP as I have an assignment due next week and need my computer.
Thanks in advance
MacBook, Mac OS X (10.7.1)