Laptop and PC maker Acer has stepped into the Ultrabook market with the launch of the Aspire S3. This is the company’s first ever product from the Ultrabook class of laptop. Acer launched the product at the ongoing IFA 2011 show hosted in Berlin. Acer‘s version measures a mere 0.51 inches, which is thinner than the Macbook Air 13-inch at its thickest point (0.67...