A couple of days ago I tried Spring Roo. Its ten-minute tutorial offers you to run Selenium tests using the following command:
mvn selenium:selenese
I launched it, but console window freezed and nothing happened.
Looks like it's a problem with Selenium+Firefox 3 (possibly also Ubuntu).
For me, a solution was simple: just change selenium-maven-plugin version to 1.0.1 (which is the most recent stable version at the time of writing). So plugin definition in Roo-generated application's pom.xml will look like
The same applies to using Selenium on Ubuntu+Firefox 3 through JUnit tests: I had to use version 1.0.1 of selenium-maven-plugin to make this work.