MBP wakes from sleep as soon as ac adapter is plugged in

My MBP recently wakes from sleep after this series of events:
1. Use MBP on battery power
2. Close lid
3. Sleeps (light pulses so apparently sleeping)
4. Plug in AC adapter (while the lid is still closed)
5. Wakes at that moment the adapter is plugged in (while the lid is still closed)
6. Sometimes the MBP recognizes the lid is indeed closed and then goes to sleep itself; other times, the MBP goes to sleep, then immediately wakes, then goes to sleep, then wakes, etc., repeatedly (this happens all while the lid is closed as if it's demented), until I open the lid, wake the system and then close the lid again. Then it will finally sleep.
"Wake on AC change" is set to No (see below). I was wondering if anyone knew how to set it to Yes. Maybe I just need to switch the setting back and forth once.
I can recreate the problem, so I can just take it to the Apple Store and let them figure it out (Applecare is still in effect), but I was just wanted to give it a shot here first.
Battery Information:
Model Information:
Serial Number: Sony-ASMB012-3926-1554
Manufacturer: Sony
Device name: ASMB012
Pack Lot Code: 0001
PCB Lot Code: 0000
Firmware Version: 0110
Hardware Revision: 0500
Cell Revision: 0303
Charge Information:
Charge remaining (mAh): 4811
Fully charged: No
Charging: Yes
Full charge capacity (mAh): 5202
Health Information:
Cycle count: 91
Condition: Good
Battery Installed: Yes
Amperage (mA): 1342
Voltage (mV): 12530
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 20
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 20
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: No
Display Sleep Uses Dim: Yes
Battery Power:
System Sleep Timer (Minutes): 5
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 3
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Hardware Configuration:
UPS Installed: No
AC Charger Information:
Connected: Yes
Charging: Yes

tsenga88 wrote:
i have the same problem as well...but in my case water spilled on my macbook i let dry it for a day and when i switched it on it went on  butwent off after about an hour..and ever since then every time i connect the charger it turnsoff and some times it just doesnt charge at all...please help
You don't have the same problem, you have the 'I damaged my Mac by spilling water on it' problem.
it will probably fail.
Take it to an Apple Store.

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