I first noticed it appeared to be making brief weird sounds. When I shut the lid, it took longer than normal for it to go into sleep mode (approx 30 seconds w/ programs running, but normally it takes about 10 seconds). Whenever, I opened it up, within a few seconds, a louder than normal fan noise happened too. I then force quit Safari because it wasn't responding. After that, there were no programs running, so I shut the lid to try to get it to sleep again. The apple lit up instead of it going to sleep. I finally tried again and it seems to be doing normally. Is anything wrong here?