A SMC reset, followed by a PRAM/NVRAM reset, followed by a safe boot may help clear things up. Command + Option + P + R held down during the Startup Chime and held down through another (2nd) chime will reset the PRAM. Holding down the Shift key during the whole startup process will bring you to the login window with "Safe Boot" in red lettering. Login to your account, then reboot normally. You may want to tell the Spotlight Prefs not to index EVERYTHING. You can check the activity monitor - especially after an update to 10.5 - your system will try to re-index everything in & attached to your Mac, greatly reducing the performance. Check your Activity Monitor or click on the magnifying glass in the upper right to see what it's up to.
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by: pheidiusPosted on 2007-12-18 at 18:59:02ID: 20497257
This problem is well documented (complained about) in the Apple forums. om/thread. jspa?messa geID=60397 37& tstart= 0
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http://discussions.apple.c
So much that I suspect it may not really be fixed until the 10.5.2 update.
In the meantime here are the instructions for resetting the System Management Controller (SMC)
MacBook, MacBook Pro
If the computer is on, turn it off.
Disconnect the AC Adapter and remove the computer's battery.
Press and hold down the power button for 5 seconds and then release the button.
Reconnect the battery and AC Adapter.
Press the Power button to restart the computer.
*taken from http://docs.info.apple.com
Hope this fix works for everyone.
Paul
P.S. Applecare also mentioned resetting the NVRAM instructions here http://docs.info.apple.com
I reset the NVRAM however I have no idea if this made any difference with solving the problem"
I've reset my SMC just a moment ago, and the "blinking led after shutdown" problem has went away. Will post tomorrow to see if the fix really worked.