$ rpm -q lpr lpr-0.50-5 lprm reported : cannot dequeue dfA488psylab.unn.ac.ru cfA488psylab.unn.ac.ru dequeued lprm: connect: Connection refused lprm: lp: cannot restart printer daemon In source code i see next sequence: 1. Kill daemon with SIGINT (rmjob.c:119) 2. lpd call mcleanup (lpd.c:173) 3. mcleanup() remove _PATH_SOCKETNAME (lpd.c:290) 4. after kill job LPRM call startdaemon (rmjob.c:134) 5. startdaemon try bind with _PATH_SOCKETNAME (startdaemon.c:69) but it was deleted in step 3 (!!!!) and work string 71 in startdaemon.c with results (see below).