My vodophone w910i text messages are just staying in the outbox and not getting sent?

i got it unlocked.. and installed the vodafone softwafre/firmware and vodafone sim (it was on 3 network before). i can make/recieve calls, i can use the net/wap. i seem to be able to receive texts but i cant sent any as they just get stuck in the outbox.. why arent they getting sent?? ta|||Hi again i take it that your on pay as you go tariff ? i wouldnt worry too much about it as ive had problems with my texts being sent today i think its a bad day for vodafone %26amp; im on pay as you go every network suffers from this problem from time to time ! i know when my texts are sent because i get a delivery report to say that the text has reached its destination %26amp; some of mine have taken ages to deliver if all the other functions are working correctly then there shouldnt be any real problems with your texts ... hope this helps