I used the Debian backports since Pidgin isn't available through the Debian repositories.
Using backports is pretty easy.
1. Add this line to your /etc/apt/sources.list:
deb http://www.backports.org/debian etch-backports main contrib non-free
2. Import the backports archive key into apt with:
wget -O - http://backports.org/debian/archive.key | apt-key add -
3. Then update:
apt-get update
Then to install Pidgin use the normal apt-get commands:
sudo apt-get install pidgin
And there you have it. Enjoy :)
