Problem about SUN Sparc running OS 4.1

[yhsieh at cadence.cadence.com]

Hi,

  We have a Sparc Station running OS 4.1.  It is up for a long time,
but suddently we can't rlogin and do anything on that machine.  
The error message is like this :

ld.so: call to undefined procedure __flsbuf from 0x6184 

  Does anyone have any ideas about this kind of error ?  Thanks a lot.

--     Tommy Hsieh
       mail address :                                                
         yhsieh at cadence.com