linux-image-2.6.15 installation error

[Surachai Locharoen <kan2005@gmail.com>]

Currently I use debian linux-image-2.6.12. I reload deb repository from 
ftp.debian.us.org. I found that there is a linux-image-2.6.15 available 
for update so I update it. However the error message is shown below when 
I apply change:

E: /var/cache/apt/archives/linux-image-2.6.15-1-686_2.6.15-4_i386.deb: 
subprocess pre-installation script returned error exit status 1

Could you tell me how to update it?

Thank you in advance.

Kan

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