Comment 5 for bug 478392

You could only remove files that are older than let's say 1 minutes. But I'm afraid that something like that happens:
- "local-filesystems" is emitted
- some program X checks that some file/directory already exists in /tmp. It does, so it doesn't need to create it
- the upstart job is launched and cleans /tmp
- the program X fails to run properly because it assumed that the file/directory existed