Just tested the latest CVS snapshot (slackware10.2,athlon xp) and it's a-ok. However, I wonder if there is a plan to add the dont_busy_wait flag to the prefs. I always hack a couple lines into default_prefs in cfgfile.c p->cpu_idle = 180; /* discovered by looking at slider output at 9 DJV */ p->dont_busy_wait = 1; /* so it doesn't use all the cpu time DJV */ Also, I put back the #define SLEEP_DONT_BUSY_WAIT in sleep.c That way, It takes almost no cpu when doing nothing, but will run full blast when it needs to. don