hi i bought a macbook about 4 months ago.. my computer has been fine until about a month ago. it runs fine for about a day (24 hours) but after that, safari quits and it gets very slow. i can move the cursor around but i cannot do anything else. i then have to hold down the power button to restart it. i don't think this is very healthy for the computer. my question is should i call apple for this? but i did not buy applecare for this, but they told me that i have 1 phone call. do you guys think that this is worth calling?