friezes on the screen

[Raffuz]

Periodically there are friezes on the screen in different applications . Lasts 5-10 seconds, then work as usual. If this lock the screen , it does not include the same 5-10 seconds or not unlocked.

[Thommo]

Does this happen at 1st start up or after you have used it for a while?

Screen freezes can be caused by latent cache not been excised creating a lag or screen freeze whilst this cache is being cleared

[Phy]

Have a look here. See if something can help.

http://talk.sonymobile.com/t5/FAQ/Does-your-phone-feel-slow-and-laggy/m-p/347824#U347824