There's nothing particulary shocking about downloading an article from the internet on the role of women in Islam. But when Afghan journalism student Pervez Kambaksh did just that, authorities charged him with blasphemy. For the past seven months he's been in jail. There is growing pressure from the international community on Afghan president Hamid Karzai, to have him pardoned. But there's also pressure from conservative mullahs to have him hanged. The BBC's Alastair Leithead has more.