On the irc channel, a bdi user was talking about what he described as "ringing": <approx> it sounds like emc1 pulsing has some kind of ringing when running constant speed <jepler> what step rates are you trying to attain? <approx> I have 1333 steps/mm . ringing occurs when running over 10mm/s I first suggested that he try "quickstep", but then I couldn't figure out which version(s) of the emc-modules package have quickstep. My bdi test machine has "emc-modules-2.6.12.6-magma+bdi.102" and apt-get doesn't report any newer version is available. But that package doesn't have a "quickstep.o". So my first question is this: Which emc-modules do I have to install to have quickstep available? I tried to answer this question for myself by using apt-file, but I got an error when running "apt-file update": --11:28:24-- http://bdi4emc.ourproject.org/debian/dists/sarge/Contents-i386.gz => `/var/cache/apt/bdi4emc.ourproject.org_debian_dists_sarge_Contents-i386.gz' Resolving bdi4emc.ourproject.org... 193.127.103.92 Connecting to bdi4emc.ourproject.org[193.127.103.92]:80... connected. HTTP request sent, awaiting response... 404 Not Found 11:28:24 ERROR 404: Not Found. Is this an error on my end, or is the ourproject.org apt repository not set up to permit use of apt-file? Thanks -- I'll pass any answers I get along to <approx> on irc. Jeff