这种情况谁见过？google上也找不到，郁闷……
$ who
yfwang tty1 2006-04-09 21:57
who: 内存用尽
$ LANG=C who
yfwang tty1 Apr 9 21:57
yfwang Apr 9 22:13 (:0.0)
$ free
total used free shared buffers cached
Mem: 646372 215916 430456 0 10424 109136
-/+ buffers/cache: 96356 550016
Swap: 682748 0 682748