When using Subversion (svn) for source control with multiple projects I\'ve noticed that the revision number increases across all of my projects\' directories. To illustrat
I store one project per repository, and like a previous commenter on this subversion question, I mark shared projects as external, so that they are only in source control once.
I'm just starting to add a CI build server (CruiseControl.NET), so I'll have to see how that all works out, but if my build scripts are right it should not be a problem.
Other than appearance though, it is really a matter of preference (in my opinion).