I remember sometimes ago, there where a guy complaining about the fact that he didn't found the .project and .classpath referred here in the eclipse configuration documentation for SC
Setting up Eclipse for SIP Communicator
* Copy the files .project and .classpath from PROJECT_DIR/ide/eclipse to PROJECT_DIR
* Right button click on the project in the Package explorer and select Refresh.
The problem is that those files are "hidden" for unix/linux user and thus doesn't appears by default in an explorer or when someone type "ls" in a console. It can be a little awkward for certain peoples. So, it could be usefull to highligth the fact that those files can be hidden.