I've had my macbook since Aug 2006 and its been great till the past couple of weeks. I've started to notice that my trackpad bar isn't working properly. For example when I want to hit a link on a webpage once it does it twice automatically. I also notice that when I hit the mail button on msn once it opens 2 safari browsers of my hotmail inbox instead of one. I first suspected that it might of been a problem with msn but also I find that when I'm typing in Word I can't highlight words in my document completely. Any suggestions as to how I could fix the problem? Is this a common problem with macbooks?