It was discovered that acpid, a daemon for delivering ACPI events, is prone to a denial of service attack by opening a large number of UNIX sockets, which are not closed properly. For the stable distribution , this problem has been fixed in version 1.0.8-1lenny1. For the oldstable distribution , this problem has been fixed in version 1.0.4-5etch1. For the testing distribution and the unstable distribution , this problem has been fixed in version 1.0.10-1. We recommend that you upgrade your acpid packages.