krusty:/J 530 bash$ rpm -qf /bin/ps procps-2.0.6-1 krusty:/J 531 bash$ /bin/ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND Signal 4 caught by ps (procps version 2.0.6). Please send bug reports to <procps-bugs> krusty:/J 532 bash$ /bin/ps ax PID TTY STAT TIME COMMAND 1 ? S 0:15 init 2 ? SW 0:05 [kflushd] 3 ? SW 1:57 [kupdate] ...
Could you try procps 2.0.7 please?
Can't reproduce with rebuilt procps-2.0.7-2 on sparc/Red Hat 6.2.