Comment 4 for bug 275825

Oh, it just occurred to me that a time-based stat() comparison is doomed to fail. dpkg preserves the timestamps of files, so if you install a new package which ships an FDI file, hal won't pick it up immediately. Worse though, even rebooting won't help.

I think the best thing we can do is to nuke the cache in the hal init script, before starting it.