Computer not going to sleep

So when I first got my macbook the computer would sleep as soon as I closed the lid. Now this is not the case. Also when I manually put the computer to sleep, it does not wake when I open the lid, I have to press Return. Any ideas?

Hi guys -
First off make sure you don't have 'Wake for ethernet access...' enabled in System Preferences/Energy Saver/Options - I'd also run Disc Utility and repair your permissions as well. OS X requires 'maintenance routines' to be performed on a certain basis and you can use this free application to help you with that...Onyx.
Check the obvious as well - that you don't have any applications that might keep your Macbook awake ...some printer utilities do this for example.
After all this shut down and restart and hopefully things will be better - if not, there may be a chance that the mechanical parts that put your computer to sleep may be at fault ...and you'll need to visit an Apple dealer to verify this.
Hope some of this helps.
Macbook 1.8-)   Mac OS X (10.4.8)   Week 38 base model w/1G Ram

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