Won't come back on?

I have a 13" MacBook. Sometimes, when I turn off my laptop but leave it plugged in to charge... I'll leave and come back a little while later. The light on the magsafe plug is green, indicating a full charge.
But when I try to turn on my laptop, nothing happens. No hard drive start up noise, nothing.
Sometimes, unplugging the charger and plugging it back in will work. When the laptop starts up, the battery indicator shows 100% even after I unplug the charger.
Sometimes, it won't come on at all. In the past, I've resorted to taking out the battery and putting it back in. It'll start up after that.
The battery pack doesn't seem to have a sloppy fit or be loose at all.
Anyone have any ideas?

I have this problem too. Sorry, I have no idea how to resolve it but feel your pain. I made 'the switch' last year so I am still a newbie. This has been happening for awhile. I also suffer from freezes/lockups when I unplug the AC adapter, and when using the pb on battery power. It stinks. Talked to tech support and they had me clean out a bunch of stuff and run some repair utilities but to no avail. I love my PB vs. my pc but the freezing thing is really a bummer. No one seems to know what to do, and the threads I found on the topic discuss issues with added ram. Mine came factory installed. Sigh. Anyone have any wisdom for us they can share? Thanks.
PB 17" 1G RAM   Mac OS X (10.4.4)  

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