Hanging radiusd

[Doug Hardie]

I am encountering a problem on 1 of my radius servers (not any of the  
others).  Every so often it hangs and quits responding to requests.   
FreeBSD 5.3.  ps shows a status of TLs which means its waiting for a  
lock.  There is no way to kill the process and ktrace shows  
absolutely nothing over many requests that timeout.  The only way to  
restart it is a reboot.  I do know that one of the memory boards is  
likely to be defective.  I suspect that this is the cause of the  
problem.  FreeBSD reports less memory on that board that is marked on  
the board itself.  I don't recall the exact numbers but its not a  
multiple of 2.  I won't be on site till Friday so won't be able to  
put in new memory till then.  Does my assumption appear valid?