[ale] Linux system testing software?

[nomad at orci.com (Robert L. Harris)]

  One of my systems is acting very strangely.  I'm wondering if something
may be failing.  I don't have windows on this system so I'm wondering 
if there are any good system testing utils for linux, memory, cache, etc?

Robert
---------------------------------------------------------------------------
Robert L. Harris                |   Windows --
Senior System Administrator II  |        Proof Micro$oft has
  at Great West Life.           \_            a room full of monkeys.

http://www.orci.com/~nomad

DISCLAIMER:
      These are MY OPINIONS ALONE.  I speak for no-one else.

FYI:
 perl -e 'print $i=pack(c5,(41*2),sqrt(7056),(unpack(c,H)-2),oct(115),10);'