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Thieves Dont

macrumors newbie
Original poster
Hi guys, I've had my Unibody Macbook Pro since November and have 2 questions that someone may be able to help me with.

1. When my computer is plugged into it's power source, everything runs smoothly, but when it's not charging some things seem sluggish. For example when I plug in my laptop and click "Applications" on the dock it opens very smooth and quickly, and sluggish/laggish while unplugged. Could this be a battery problem?

2. Another question I have is about the black plastic underneath where it says "Macbook Pro" that is connected to the bottom part. Whenever I open/close the lid it creaks and when I touch that plastic part I get a similar sound. I brought it to an Apple Store and they told me that there is nothing wrong, but it never made that noise for about the first 2 months. Anyone know what the problem is there?
 
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