如何使用aptitude在debian-lenny上安装requestracker 3.8?

我想在我的debian服务器上安装Request tracker,我想通过aptitude来做,这是可行的吗? 我尝试添加德backports以下本教程的源列表: http : //requesttracker.wikia.com/wiki/DebianInstallGuide ,但是我得到

Couldn't find any package whose name or description matched "request-tracker3.8" 

当我尝试:

 aptitude install request-tracker3.8 

谢谢!

在你添加backports到你的sources.list后,你是否运行apt-get updateaptitude update

request-tracker在我的系统上启用了backports:

 petrus@tank:~$ aptitude search request-tracker p request-tracker3.6 - Extensible trouble-ticket tracking system p request-tracker3.8 - extensible trouble-ticket tracking system