内存泄露or非计算内存耗尽

最近我这边有两台IBM P55A主机每隔一至两个月就会出现telnet远程不能连接，其他命令不能使用等异常。报错如下：[smf@sagscf0 ~]$ telnet 134.224.48.102
Trying 134.224.48.102...
Connected to 134.224.48.102 (134.224.48.102).
Escape character is '^]'.
Could not load program telnetd:
Could not load module /usr/lib/libc.a(shr.o).
        Dependent module libcrypt.a(shr.o) could not be loaded.
Could not load module libcrypt.a(shr.o).
System error: Not enough space
Could not load module telnetd.
        Dependent module /usr/lib/libc.a(shr.o) could not be loaded.
Could not load module .
Connection closed by foreign host.
  出现问题之后需要断电重启才会恢复正常，但是过一段时间之后问题依旧。
  至今没有找到原因，我现在尝试修改vmo参数，不知道这个问题是否有好转。各位兄弟是否有其他高见，请多指教!谢谢~