i can send it off for repair, but if they inspect it and find no fault they will charge me £20 to return it to me... even under the 2-year manufacturer warranty!
ive searched the Sony forums and there are other people with the exact same fault, so i have since downgraded my OS and have had no further problems, the phone is now essentially half brain-dead in terms of functionality but its better than nothing, when im on base i tether all my devices to the internet through my Xperia, if i lose the Xperia i loose all internet and eBay functionality, which is a bad thing as i trade a lot through it.