How can i install hudson on ubuntu 10.10

Question

When i try t install, i get error:

aptitude install hudson
The following NEW packages will be installed:
  hudson 
0 packages upgraded, 1 newly installed, 0 to remove and 279 not upgraded.
Need to get 38.8MB of archives. After unpacking 39.7GB will be used.
WARNING: untrusted versions of the following packages will be installed!

Untrusted packages could compromise your system's security.
You should only proceed with the installation if you are certain that
this is what you want to do.

  hudson 

Do you want to ignore this warning and proceed anyway?
To continue, enter "Yes"; to abort, enter "No": Yes
Get:1 http://hudson-ci.org/debian/ binary/ hudson 1.397 [38.8MB]
Fetched 1B in 0s (2B/s)           
E: Failed to fetch http://hudson-ci.org/debian/binary/hudson_1.397_all.deb: Size mismatch

Answer 1

apt-get clean

apt-get update

apt-get install hudson

this should work.