Microsoft (NASDAQ: MSFT ) CEO Steve Ballmer told French daily Le Parisien that sales of the company's first tablet "are starting modestly." Ballmer also said that the supply shortages were a "good sign." He added that Microsoft will "fix this problem quickly" as the company increases capacity, which is part of its overall strategy. (Can Microsoft rebound despite management changes ?) In July, Ballmer said that Microsoft's goal was to sell a few million units in the next 12 months. His latest comments indicate that Microsoft will be able to meet that goal. No specific sales figures were provided. But USA Today might have some additional insight into how the tablet space is evolving. According to the publication, Apple's (NASDAQ: AAPL ) market share has dropped to 50 percent. This is a far cry from the more than 60 percent market share that the company commanded in 2011.