Share your experience!
I have had my SP for 14 months now and I hate it so much, I wish I had never signed the contract. Things didn't get off to a good start when within the first 3 weeks it froze completely and had to be replaced. The replacement worked ok for a while but now I increasingly get the message " messages has become unresponsive..." or "facebook has become unresponsive...." or "Chrome has become unresponsive..." or whatever app I am using including the camera. The internet connection is painfully slow at times and repeatedly locks up. I regularly clear out the cache and delete unused apps eyc (except the preloaded ones...why can't I delete them too? I never use them) I can't wait for this contract to finish so I can get a decent phone from another manufacturer. A great pity really as this will bring to an end my long association with Sony.
Repair your phone with PCC and report back
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
You should contact your local Xperia Care