[newbie] Breezy =>DapperDrake upgrade fails with error 2?

[David Armour]

hello,

so far, i'm loving ubuntu. and i'm keen to try out all the good stuff 
i've been reading about dapper. however, following the instructions for 
upgrading found here...

https://wiki.ubuntu.com/DapperUpgrades

... produces this error:

Failed to fetch 
http://archive.ubuntu.com/ubuntu/dists/breezy-backports/main/binary-i386/Packages.gz 
Sub-process bzip2 returned an error code (2)

the dialog pop up suggests trying again later, which i've done two or 
three times since, with the same result.

i'd greatly appreciate any ideas, or pointers for finding further info 
about the error. thank you for reading this.

-- 
= d.f.)dave(armour<at>shaw<dought>ca(lm!) =