Gwyneth Paltrow has vowed to stay away from the US. The actress' Coldplay star husband Chris Martin was involved in a scuffle with a paparazzo last week shortly after Gwyneth left a New York hospital where she had been treated for a gastrointestinal problem. The Los Angeles-born star - who mainly lives in the UK now with her British spouse and their two children, daughter Apple and son Moses - was so shaken up by the incident she has decided not to go back to her home country unless she "absolutely has to". A source close to Gwyneth said: "She...