Why is my laptop slowing right down when itunes is installed?

Question

i have a windows 7 laptop that i have installed itunes on and it has slowed my laptop right down. the cpu usage is going up to 100% and it is taking at least 5 minutes to do any basic actions such as opening an application (ms Word etc). i have 2gb of ram and decent intel with it. i cannot understand why when i have loads of memory left and the programme isnt actually open. and when i do manage to get it open, it wont let me access the itunes store. is there a way of turning itunes off for when im not using it like you do on the ipod for example, and turning it back on when i need it again?
And i cant understand why it wont let me access the itunes store. the firewall is not blocking it and i have a decent wifi connection although the dagnostics on it says i dont have a sercure wifi connection. any ideas for this?
Thanks

Answer 1

This looks better
     int trakx[] = new int[20];
     int traky[] = new int[20];
     int pos = 0;
     int i1  = -20;
     int i2  = -10;
     int i3  = -2;
public void newPos(int x,int y)
     i1 = (i1+1)%20;
     i2 = (i2+1)%20;
     i3 = (i3+1)%20;     
     trakx[pos] = x;
     traky[pos] = y;
     pos = (pos+1)%20;
     repaint();
}public void paint(Graphics g)
if (i1 >= 0) g.fillOval(trakx[i1] - 20, traky[i1] - 20, 40, 40);
     if (i2 >= 0) g.fillOval(trakx[i2] - 10, traky[i2] - 10, 20, 20);
     if (i3 >= 0) g.fillOval(trakx[i3] - 5 , traky[i3] - 5, 10, 10);
Noah