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The issue might be related to the apps in this case either facebook or the game itself
Indeed but there might be an issue with the games and 4.2.2 and that will be up to the game devs to fix, you could try to repair your tablet with PCC or SUS and see if that helps
Update Service (SUS)
http://www.sonymobile.com/gb/tools/update-service/
http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
Don't forget the Kudos
Anytime