[collectd] Unix Sock Plugin Issue

[Andrés J. Díaz]

Hi Florian

> when shutting down the daemon, the `unixsock' plugin removes the socket
> file itself. The file is leftover, though, if the daemon crashes or
> doesn't shutdown correctly for some reason. In that case, please report
> this here with as much information as you can get.

In my case the daemon crashed due to a SIGPFE in librrd, you known, an
old friend bug :)  I had this problem in versions linked with old
versions of librrd, with new versions I've not problem.