I have Sony Bridge for Mac and it worked though somewhat slowly on Snow Leopard. Since I upgraded to Mavericks on my Mac, it is extremely slow and very frustrating. I love my Xperia E but am almost thinking of going to iPhone when I chose Sony first due to happy experience and cost. I have tried asking Sony that suggested a reinstall which made not difference. Apple was helpful too. Any suggestions? May be, others have had similar things happen. Can you help?