Sony said Friday there was a risk that batteries made by Panasonic in nearly 26,000 of Sony's newest Vaio personal computers could overheat and catch fire, the latest product glitch for the Japanese electronics and entertainment giant. As a result, Sony is asking customers to stop using its Vaio Fit 11A laptop as soon as possible. Sony said it had received three reports of batteries overheating causing partial burns to Vaio computers. The first incident was in Japan on March 19, followed by similar incidents on March 30 in Hong Kong and April 8 in China. The company stopped selling the product at the beginning of this month. The model is the final version of the Vaio series. Sony unveiled plans in February to sell its personal computer business as part of a strategy to deal with its two most troubled electronics units, televisions and personal computers. The company will also split off its money-losing TV division into a separate subsidiary.