Currently have a 4 year old 12" 1.5Ghz Powerbook with a 1.5 year old battery. I was getting upto 1 hour 35 mins on a single charge with wifi use and bluetooth off. After switching to Leopard the battery life droppped to 1 hour and now the charge only lasts for 35 mins. Also when I switched to leopard my power adapter shorted out and so I purchased a third party power adapter. I thought I was buying a 65W but turned out to be an older 45W one. Could this be the problem? One of my friends seeme to be quite sure that its the adapter and to rectofy the situation i would beed to replace the afapter as well as the battery now as the inferior adapter would have ruied the battery as well... Thoughts?