with ulatencyd installed, when jackdbus is started mouse/keyboard lock/freeze

After installing ulatencyd, when I use qjackctl or jack_control to start jackdbus, the mouse can not be moved or clicked. The keyboard has no effect either. But pressing the soft-power switch does bring up the logout/shutdown dialog... though I can't select any options from it with the mouse or keyboard. I have to hold the power switch for 10seconds to power the system down and restart. I have chmod -x ulatencyd for now so I can run my machine.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ulatencyd 0.5.0-4ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-23.31-lowlatency-pae 3.2.14
Uname: Linux 3.2.0-23-lowlatency-pae i686
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
Date: Sun May 27 20:54:19 2012
InstallationMedia: Ubuntu-Studio 12.04 "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 LANGUAGE=en_CA:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: ulatencyd
UpgradeStatus: No upgrade log present (probably fresh install)