Mate I had exactly the same problem. I upgraded to the official 3 UK stock ROM and had so many issues, mainly with Google play and my internet connection. I flashed, I zipped and even unzipped but to no avail. I decided to give the Andy x ROM.a go yesterday and flashed a Syiah kennel and my phone is running very very sweet, I don't know if this is any help for you. Hope you get it sorted, its unbelievably frustrating.
Calvo 1