I dont know what are the rules regarding their criminal liability, but the ban ICC has given them is fair.
Um, that's been the whole point of this trial. It's a criminial prosecution brought by the police, it has nothing to do with the ICC as criminal prosecution is outside of their jurisdiction.
This is all about them breaking the laws of the UK. I'm a little surprised some people are only just catching on to this, what did you think the trial was for?
Their liability is potentially 9 years in jail for Asif and Butt. Really have no idea why people think just a ban from the ICC (who wouldn't have been able to enforce said ban at all levels, they have no power to, in reality) is fair. This is corruption of hundreds of thousands of pounds.
As Colin said, they'll probably tootle off to Dubai and never face the custodial sentences they are likely to face.
It's time for cricket to get tough.