UBUNTU has been superlative in putting LINUX into a average user's desktop.
But when it comes to installing applications, it is confusing to a great extent. It is definitely great to have open source applications, but it leaves a user totally confused as to which application to use. For example, for a simple audio player there are about 10-12 applications each having a specialty feature missing in the rest.
That leaves a user ...
I believe UBUNTU should set up a platform of preferred applications for each category with a default blessed application and:
1. Either urging the open-source developers to offer their application as a plugin to this blessed application.
2. Or offering a mechanism to use it as a plugin to their blessed application.
This has been a successful approach adopted by Mozilla Firefox and Eclipse.
That way a user will at least be assured that a blessed application meets the UBUNTU standards. The extensions/plugins can be at his discretion.
That will instill confidence in an UBUNTU user.