Reading the newpapers recently, I collected my sources on the 23 Korean Christian Aid Workers from 19 July 2007 up to now. 

On July 19, 2007, 23 South Korean Protestant Christian aid workers are captured by the Taliban from a public bus travelling in the Ghazni Province, from Kandahar to Kabul, and held hostage.
On 25 July one of the South Korean hostages is killed. South Korea's foreign ministry identifies the victim as 42-year-old South Korean pastor Bae Hyung-kyu, who is the leader of the group .
On 29 July a final deadline is set by the Taliban for July 30 0730 GMT.
On 30 July the Taliban extends the deadline for the seventh time by 4 hours to 1130 GMT to give Afghan officials more time to negotiate[3]. A Taliban spokesperson later claims that another male hostage is shot dead because the government has not acceded to the group's demands. This is later confirmed when the body of 29-year-old Shim Sung-min is found in the village of Arzoo (50 miles from where the kidnapping took place).
On 31 July the deadline is extended to August 1 0730 GMT.

Just what the $!%^#@ are they doing?