Thanks for the info. I have my computer's hibernate disabled. I know for sure that it's staying on and I leave the battery to charge all night.
And you're probably right about it being too late to return (and I can't for the life of me find the receipt which compounds the problem). Sony linked this page to me
http://www.kb.sony.com/selfservice/d...nalId=C1001215 which more or less tells me that my battery is trash and I need a new one. I hope this is an easy process. :\