My Samsung Galaxy Tab 10.1 just returned from Samsung Service Centre , Petaling Jaya , My Tab 10.1 earlier had this problem , the battery just died , COMPLETELY and my battery was around 80% sooner or later , my tablet just died.....the I can't even turn it on , this is bullshit , They say they changed my tablet's motherboard , how come this problem can happen again?! I don't think its the motherboard's problem at all , it may be the battery , I'm a loyal Samsung user and now I just felt kinda betrayed , and this Wednesday I'm going back to China to visit my relatives and stay with them for awhile , and I can't believe something like this could happen at the very last moment , so guys what do you think that's causing my problem??