apt-get update PPA errors with Ubuntu 10.04

[nodnolse1 at gmail.com]

root at a# apt-get update

[CUT]
Hit http://download.virtualbox.org lucid/non-free Packages
Hit http://us.archive.ubuntu.com lucid-security/multiverse Sources
Fetched 10.8kB in 1s (10.3kB/s)

W: Failed to fetch 
http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/lucid/Release  
Unable to find expected entry  deb-src/binary-i386/Packages in 
Meta-index file (malformed Release file?)

E: Some index files failed to download, they have been ignored, or old 
ones used instead.
root at a#