Share your experience!
The following might of interest to you ....
http://talk.sonymobile.com/t5/FAQ/Does-your-phone-feel-slow-and-laggy/m-p/347824#U347824
Suggest rebooting phone more frequent, especially when phone is laggy. One other thing to do is to exit apps using Back key rather than the Home key.
Yup, I understand. Everyone wants a smooth-running phone.
You may consider re-installing phone software, this will definitely help. Just make sure you backup your phone data.
I guess those are the couple of extra steps (for now) to get rid of the lag ....
No problem, you are most welcome! 