Just got my bill this morning at it was about 430 Euro, which is neat, as I only have a bill of about 130 a month max. My previous bill from September was 211 Euro - which I left unnoticed as I had been roaming in Poland and Germany and thought nothing more of it. However, when I got the bill this morning, I went pale. On examination, it seems that 300 Euro of this months bill is for 14 Megs of Data, and 140 Euro of the previous bill was for 8 Megs of Data. The maximum data charge you can run up in a month is 30 Euro!
Naturally, I've just phoned Vodafone and absolutely f*cked them out of it. They've given me a month's line rental F.O.C., and are investigating the issue which they think is down to a tarriff screw up on their part. If anyone else gets insane bills though, get them checked!