Linux computer freezes upon connection

[Vincent Ragosta]

I am trying to connect to my Linux computer that is running RedHat
Fedora Core5.  However, immediately upon connecting, the linux computer
freezes up and I must reboot the computer.  It does this regardless of
whether I am connecting from the local LAN or across the Internet.  The
output of uname is: Linux misato 2.6.17-1.2187_FC5 #1 SMP Mon Sep 11
01:16:59 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux  Does anyone have any
ideas what may be happening?  Thanks.
 
-Vincent